Merge "Use NoteDb sequence seed for accounts sequence initialization"
diff --git a/Documentation/access-control.txt b/Documentation/access-control.txt
index 13e3a53..516cf13 100644
--- a/Documentation/access-control.txt
+++ b/Documentation/access-control.txt
@@ -1362,6 +1362,12 @@
 command, but also to the web UI results pagination size.
 
 
+[[capability_readAs]]
+=== Read As
+
+Allow users to impersonate any user to see which refs they can read.
+
+
 [[capability_runAs]]
 === Run As
 
diff --git a/Documentation/config-gerrit.txt b/Documentation/config-gerrit.txt
index 6362597..fc9d405 100644
--- a/Documentation/config-gerrit.txt
+++ b/Documentation/config-gerrit.txt
@@ -2979,7 +2979,7 @@
 for production use. For compatibility information, please refer to the
 link:https://www.gerritcodereview.com/elasticsearch.html[project homepage].
 
-When using Elasticsearch versions 2.4 and 5.6, the open and closed changes are
+When using Elasticsearch version 5.6, the open and closed changes are
 indexed in a single index, separated into types `open_changes` and `closed_changes`
 respectively. When using version 6.2 or later, the open and closed changes are
 merged into the default `_doc` type. The latter is also used for the accounts and
@@ -3016,6 +3016,22 @@
 +
 Defaults to `30000 ms`.
 
+[[elasticsearch.numberOfShards]]elasticsearch.numberOfShards::
++
+Sets the number of shards to use per index. Refer to the
+link:https://www.elastic.co/guide/en/elasticsearch/reference/current/_basic_concepts.html#getting-started-shards-and-replicas[
+Elasticsearch documentation] for details.
++
+Defaults to 5.
+
+[[elasticsearch.numberOfReplicas]]elasticsearch.numberOfReplicas::
++
+Sets the number of replicas to use per index. Refer to the
+link:https://www.elastic.co/guide/en/elasticsearch/reference/current/_basic_concepts.html#getting-started-shards-and-replicas[
+Elasticsearch documentation] for details.
++
+Defaults to 1.
+
 ==== Elasticsearch Security
 
 When security is enabled in Elasticsearch, the username and password must be provided.
@@ -3023,11 +3039,11 @@
 
 For further information about Elasticsearch security, please refer to the documentation:
 
-* link:https://www.elastic.co/guide/en/elasticsearch/plugins/2.4/security.html[Elasticsearch 2.4]
 * link:https://www.elastic.co/guide/en/x-pack/5.6/security-getting-started.html[Elasticsearch 5.6]
 * link:https://www.elastic.co/guide/en/x-pack/6.2/security-getting-started.html[Elasticsearch 6.2]
 * link:https://www.elastic.co/guide/en/elastic-stack-overview/6.3/security-getting-started.html[Elasticsearch 6.3]
 * link:https://www.elastic.co/guide/en/elastic-stack-overview/6.4/security-getting-started.html[Elasticsearch 6.4]
+* link:https://www.elastic.co/guide/en/elastic-stack-overview/6.5/security-getting-started.html[Elasticsearch 6.5]
 
 [[elasticsearch.username]]elasticsearch.username::
 +
diff --git a/Documentation/dev-plugins.txt b/Documentation/dev-plugins.txt
index d7bd8b3..82a9527 100644
--- a/Documentation/dev-plugins.txt
+++ b/Documentation/dev-plugins.txt
@@ -2102,6 +2102,16 @@
 `com.google.gerrit.server.git.ChangeReportFormatter` interface, a plugin
 may change the formatting of the report.
 
+[[url-formatting]]
+== URL Formatting
+
+URLs to various parts of Gerrit are usually formed by adding suffixes to
+the canonical web URL.
+
+By implementing the
+`com.google.gerrit.server.config.UrlFormatter` interface, a plugin may
+change the format of the URL.
+
 [[links-to-external-tools]]
 == Links To External Tools
 
diff --git a/WORKSPACE b/WORKSPACE
index 8c8102b..6daa686 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -211,6 +211,12 @@
 )
 
 maven_jar(
+    name = "guava-failureaccess",
+    artifact = "com.google.guava:failureaccess:1.0.1",
+    sha1 = "1dcf1de382a0bf95a3d8b0849546c88bac1292c9",
+)
+
+maven_jar(
     name = "j2objc",
     artifact = "com.google.j2objc:j2objc-annotations:1.1",
     sha1 = "ed28ded51a8b1c6b112568def5f4b455e6809019",
@@ -1016,8 +1022,8 @@
 # and httpasyncclient as necessary.
 maven_jar(
     name = "elasticsearch-rest-client",
-    artifact = "org.elasticsearch.client:elasticsearch-rest-client:6.5.0",
-    sha1 = "241436d27cf65b84d17126dc7b6b947e8e2c173c",
+    artifact = "org.elasticsearch.client:elasticsearch-rest-client:6.5.1",
+    sha1 = "d87892e24ef361b9fff5435246b0f0b8f4561fe8",
 )
 
 JACKSON_VERSION = "2.9.7"
diff --git a/java/com/google/gerrit/acceptance/AbstractDaemonTest.java b/java/com/google/gerrit/acceptance/AbstractDaemonTest.java
index 7451351..362803f 100644
--- a/java/com/google/gerrit/acceptance/AbstractDaemonTest.java
+++ b/java/com/google/gerrit/acceptance/AbstractDaemonTest.java
@@ -38,7 +38,6 @@
 import com.google.common.primitives.Chars;
 import com.google.gerrit.acceptance.AcceptanceTestRequestScope.Context;
 import com.google.gerrit.acceptance.testsuite.account.TestSshKeys;
-import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
 import com.google.gerrit.common.Nullable;
 import com.google.gerrit.common.data.AccessSection;
 import com.google.gerrit.common.data.GroupDescription;
@@ -295,7 +294,6 @@
   @Inject private AccountIndexer accountIndexer;
   @Inject private Groups groups;
   @Inject private GroupIndexer groupIndexer;
-  @Inject private ProjectOperations projectOperations;
 
   private ProjectResetter resetter;
   private List<Repository> toClose;
@@ -552,44 +550,6 @@
     return resourcePrefix + name;
   }
 
-  protected Project.NameKey createProject(String nameSuffix, Project.NameKey parent)
-      throws Exception {
-    // Default for createEmptyCommit should match TestProjectConfig.
-    return projectOperations.newProject().parent(parent).create();
-  }
-
-  protected Project.NameKey createProject(
-      String nameSuffix, Project.NameKey parent, boolean createEmptyCommit) throws Exception {
-    // Default for createEmptyCommit should match TestProjectConfig.
-    if (parent == null) {
-      return projectOperations.newProject().createEmptyCommit(createEmptyCommit).create();
-    }
-    return projectOperations
-        .newProject()
-        .parent(parent)
-        .createEmptyCommit(createEmptyCommit)
-        .create();
-  }
-
-  protected Project.NameKey createProject(
-      String nameSuffix, Project.NameKey parent, boolean createEmptyCommit, SubmitType submitType)
-      throws Exception {
-    if (parent == null) {
-      return projectOperations
-          .newProject()
-          .createEmptyCommit(createEmptyCommit)
-          .submitType(submitType)
-          .create();
-    }
-    return projectOperations
-        .newProject()
-        .submitType(submitType)
-        .parent(parent)
-        .createEmptyCommit(createEmptyCommit)
-        .parent(parent)
-        .create();
-  }
-
   protected Project.NameKey createProjectOverAPI(
       String nameSuffix, Project.NameKey parent, boolean createEmptyCommit, SubmitType submitType)
       throws RestApiException {
diff --git a/java/com/google/gerrit/acceptance/GerritServer.java b/java/com/google/gerrit/acceptance/GerritServer.java
index 981ee6b..96a9053 100644
--- a/java/com/google/gerrit/acceptance/GerritServer.java
+++ b/java/com/google/gerrit/acceptance/GerritServer.java
@@ -228,6 +228,9 @@
 
           // Silence non-critical messages from apache.http.
           .put("org.apache.http", Level.WARN)
+
+          // Silence non-critical messages from Jetty.
+          .put("org.eclipse.jetty", Level.WARN)
           .build();
 
   private static boolean forceLocalDisk() {
diff --git a/java/com/google/gerrit/common/data/AccessSection.java b/java/com/google/gerrit/common/data/AccessSection.java
index c8d8d41..b3da199 100644
--- a/java/com/google/gerrit/common/data/AccessSection.java
+++ b/java/com/google/gerrit/common/data/AccessSection.java
@@ -37,7 +37,7 @@
     super(refPattern);
   }
 
-  public List<Permission> getPermissions() {
+  public ImmutableList<Permission> getPermissions() {
     return permissions == null ? ImmutableList.of() : ImmutableList.copyOf(permissions);
   }
 
diff --git a/java/com/google/gerrit/common/data/LabelType.java b/java/com/google/gerrit/common/data/LabelType.java
index ff7d25b..be4c33c 100644
--- a/java/com/google/gerrit/common/data/LabelType.java
+++ b/java/com/google/gerrit/common/data/LabelType.java
@@ -94,8 +94,7 @@
 
   protected String name;
 
-  // String rather than LabelFunction for backwards compatibility with GWT JSON interface.
-  protected String functionName;
+  protected LabelFunction function;
 
   protected boolean copyMinScore;
   protected boolean copyMaxScore;
@@ -123,7 +122,7 @@
     values = sortValues(valueList);
     defaultValue = 0;
 
-    functionName = LabelFunction.MAX_WITH_BLOCK.getFunctionName();
+    function = LabelFunction.MAX_WITH_BLOCK;
 
     maxNegative = Short.MIN_VALUE;
     maxPositive = Short.MAX_VALUE;
@@ -160,15 +159,11 @@
   }
 
   public LabelFunction getFunction() {
-    if (functionName == null) {
-      return null;
-    }
-    return LabelFunction.parse(functionName)
-        .orElseThrow(() -> new IllegalStateException("Unsupported functionName: " + functionName));
+    return function;
   }
 
   public void setFunction(@Nullable LabelFunction function) {
-    this.functionName = function != null ? function.getFunctionName() : null;
+    this.function = function;
   }
 
   public boolean canOverride() {
diff --git a/java/com/google/gerrit/common/data/Permission.java b/java/com/google/gerrit/common/data/Permission.java
index a30d412..2e9c2d6 100644
--- a/java/com/google/gerrit/common/data/Permission.java
+++ b/java/com/google/gerrit/common/data/Permission.java
@@ -158,7 +158,7 @@
     exclusiveGroup = newExclusiveGroup;
   }
 
-  public List<PermissionRule> getRules() {
+  public ImmutableList<PermissionRule> getRules() {
     return rules == null ? ImmutableList.of() : ImmutableList.copyOf(rules);
   }
 
diff --git a/java/com/google/gerrit/common/data/ProjectAccess.java b/java/com/google/gerrit/common/data/ProjectAccess.java
index ea17525..a40af22 100644
--- a/java/com/google/gerrit/common/data/ProjectAccess.java
+++ b/java/com/google/gerrit/common/data/ProjectAccess.java
@@ -14,6 +14,7 @@
 
 package com.google.gerrit.common.data;
 
+import com.google.gerrit.extensions.common.WebLinkInfo;
 import com.google.gerrit.reviewdb.client.AccountGroup;
 import com.google.gerrit.reviewdb.client.Project;
 import java.util.List;
@@ -31,7 +32,7 @@
   protected LabelTypes labelTypes;
   protected Map<String, String> capabilities;
   protected Map<AccountGroup.UUID, GroupInfo> groupInfo;
-  protected List<WebLinkInfoCommon> fileHistoryLinks;
+  protected List<WebLinkInfo> fileHistoryLinks;
 
   public ProjectAccess() {}
 
@@ -132,11 +133,11 @@
     groupInfo = m;
   }
 
-  public void setFileHistoryLinks(List<WebLinkInfoCommon> links) {
+  public void setFileHistoryLinks(List<WebLinkInfo> links) {
     fileHistoryLinks = links;
   }
 
-  public List<WebLinkInfoCommon> getFileHistoryLinks() {
+  public List<WebLinkInfo> getFileHistoryLinks() {
     return fileHistoryLinks;
   }
 }
diff --git a/java/com/google/gerrit/common/data/WebLinkInfoCommon.java b/java/com/google/gerrit/common/data/WebLinkInfoCommon.java
deleted file mode 100644
index dd0a70a..0000000
--- a/java/com/google/gerrit/common/data/WebLinkInfoCommon.java
+++ /dev/null
@@ -1,24 +0,0 @@
-// Copyright (C) 2015 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package com.google.gerrit.common.data;
-
-public class WebLinkInfoCommon {
-  public WebLinkInfoCommon() {}
-
-  public String name;
-  public String imageUrl;
-  public String url;
-  public String target;
-}
diff --git a/java/com/google/gerrit/elasticsearch/AbstractElasticIndex.java b/java/com/google/gerrit/elasticsearch/AbstractElasticIndex.java
index 6da19cd..3b589b2 100644
--- a/java/com/google/gerrit/elasticsearch/AbstractElasticIndex.java
+++ b/java/com/google/gerrit/elasticsearch/AbstractElasticIndex.java
@@ -107,6 +107,7 @@
     return content;
   }
 
+  private final ElasticConfiguration config;
   private final Schema<V> schema;
   private final SitePaths sitePaths;
   private final String indexNameRaw;
@@ -118,17 +119,18 @@
   protected final ElasticQueryBuilder queryBuilder;
 
   AbstractElasticIndex(
-      ElasticConfiguration cfg,
+      ElasticConfiguration config,
       SitePaths sitePaths,
       Schema<V> schema,
       ElasticRestClientProvider client,
       String indexName,
       String indexType) {
+    this.config = config;
     this.sitePaths = sitePaths;
     this.schema = schema;
     this.gson = new GsonBuilder().setFieldNamingPolicy(LOWER_CASE_WITH_UNDERSCORES).create();
     this.queryBuilder = new ElasticQueryBuilder();
-    this.indexName = cfg.getIndexName(indexName, schema.getVersion());
+    this.indexName = config.getIndexName(indexName, schema.getVersion());
     this.indexNameRaw = indexName;
     this.client = client;
     this.type = client.adapter().getType(indexType);
@@ -199,7 +201,7 @@
   protected abstract String getMappings();
 
   private String getSettings() {
-    return gson.toJson(ImmutableMap.of(SETTINGS, ElasticSetting.createSetting()));
+    return gson.toJson(ImmutableMap.of(SETTINGS, ElasticSetting.createSetting(config)));
   }
 
   protected abstract String getId(V v);
@@ -293,8 +295,11 @@
   }
 
   protected String getURI(String type, String request) throws UnsupportedEncodingException {
-    String encodedType = URLEncoder.encode(type, UTF_8.toString());
     String encodedIndexName = URLEncoder.encode(indexName, UTF_8.toString());
+    if (SEARCH.equals(request) && client.adapter().omitTypeFromSearch()) {
+      return encodedIndexName + "/" + request;
+    }
+    String encodedType = URLEncoder.encode(type, UTF_8.toString());
     return encodedIndexName + "/" + encodedType + "/" + request;
   }
 
diff --git a/java/com/google/gerrit/elasticsearch/ElasticConfiguration.java b/java/com/google/gerrit/elasticsearch/ElasticConfiguration.java
index 8d29d21..6863238 100644
--- a/java/com/google/gerrit/elasticsearch/ElasticConfiguration.java
+++ b/java/com/google/gerrit/elasticsearch/ElasticConfiguration.java
@@ -40,9 +40,13 @@
   static final String KEY_MAX_RETRY_TIMEOUT = "maxRetryTimeout";
   static final String KEY_PREFIX = "prefix";
   static final String KEY_SERVER = "server";
+  static final String KEY_NUMBER_OF_SHARDS = "numberOfShards";
+  static final String KEY_NUMBER_OF_REPLICAS = "numberOfReplicas";
   static final String DEFAULT_PORT = "9200";
   static final String DEFAULT_USERNAME = "elastic";
   static final int DEFAULT_MAX_RETRY_TIMEOUT_MS = 30000;
+  static final int DEFAULT_NUMBER_OF_SHARDS = 5;
+  static final int DEFAULT_NUMBER_OF_REPLICAS = 1;
   static final TimeUnit MAX_RETRY_TIMEOUT_UNIT = TimeUnit.MILLISECONDS;
 
   private final Config cfg;
@@ -51,6 +55,8 @@
   final String username;
   final String password;
   final int maxRetryTimeout;
+  final int numberOfShards;
+  final int numberOfReplicas;
   final String prefix;
 
   @Inject
@@ -71,6 +77,10 @@
                 DEFAULT_MAX_RETRY_TIMEOUT_MS,
                 MAX_RETRY_TIMEOUT_UNIT);
     this.prefix = Strings.nullToEmpty(cfg.getString(SECTION_ELASTICSEARCH, null, KEY_PREFIX));
+    this.numberOfShards =
+        cfg.getInt(SECTION_ELASTICSEARCH, null, KEY_NUMBER_OF_SHARDS, DEFAULT_NUMBER_OF_SHARDS);
+    this.numberOfReplicas =
+        cfg.getInt(SECTION_ELASTICSEARCH, null, KEY_NUMBER_OF_REPLICAS, DEFAULT_NUMBER_OF_REPLICAS);
     this.hosts = new ArrayList<>();
     for (String server : cfg.getStringList(SECTION_ELASTICSEARCH, null, KEY_SERVER)) {
       try {
diff --git a/java/com/google/gerrit/elasticsearch/ElasticQueryAdapter.java b/java/com/google/gerrit/elasticsearch/ElasticQueryAdapter.java
index 65d2916..40c1bbb 100644
--- a/java/com/google/gerrit/elasticsearch/ElasticQueryAdapter.java
+++ b/java/com/google/gerrit/elasticsearch/ElasticQueryAdapter.java
@@ -21,6 +21,7 @@
 
   private final boolean ignoreUnmapped;
   private final boolean usePostV5Type;
+  private final boolean omitTypeFromSearch;
 
   private final String searchFilteringName;
   private final String indicesExistParam;
@@ -31,33 +32,16 @@
   private final String versionDiscoveryUrl;
 
   ElasticQueryAdapter(ElasticVersion version) {
-    this.ignoreUnmapped = version == ElasticVersion.V2_4;
-    this.usePostV5Type = version.isV6();
-    this.versionDiscoveryUrl = version.isV6() ? "/%s*" : "/%s*/_aliases";
-
-    switch (version) {
-      case V5_6:
-      case V6_2:
-      case V6_3:
-      case V6_4:
-      case V6_5:
-        this.searchFilteringName = "_source";
-        this.indicesExistParam = "?allow_no_indices=false";
-        this.exactFieldType = "keyword";
-        this.stringFieldType = "text";
-        this.indexProperty = "true";
-        this.rawFieldsKey = "_source";
-        break;
-      case V2_4:
-      default:
-        this.searchFilteringName = "fields";
-        this.indicesExistParam = "";
-        this.exactFieldType = "string";
-        this.stringFieldType = "string";
-        this.indexProperty = "not_analyzed";
-        this.rawFieldsKey = "fields";
-        break;
-    }
+    this.ignoreUnmapped = false;
+    this.usePostV5Type = version.isV6OrLater();
+    this.omitTypeFromSearch = version.isV7OrLater();
+    this.versionDiscoveryUrl = version.isV6OrLater() ? "/%s*" : "/%s*/_aliases";
+    this.searchFilteringName = "_source";
+    this.indicesExistParam = "?allow_no_indices=false";
+    this.exactFieldType = "keyword";
+    this.stringFieldType = "text";
+    this.indexProperty = "true";
+    this.rawFieldsKey = "_source";
   }
 
   void setIgnoreUnmapped(JsonObject properties) {
@@ -100,8 +84,12 @@
     return usePostV5Type;
   }
 
-  String getType(String preV6Type) {
-    return usePostV5Type() ? POST_V5_TYPE : preV6Type;
+  boolean omitTypeFromSearch() {
+    return omitTypeFromSearch;
+  }
+
+  String getType(String type) {
+    return usePostV5Type() ? POST_V5_TYPE : type;
   }
 
   String getVersionDiscoveryUrl(String name) {
diff --git a/java/com/google/gerrit/elasticsearch/ElasticSetting.java b/java/com/google/gerrit/elasticsearch/ElasticSetting.java
index 6fd234d..98c313c 100644
--- a/java/com/google/gerrit/elasticsearch/ElasticSetting.java
+++ b/java/com/google/gerrit/elasticsearch/ElasticSetting.java
@@ -22,33 +22,33 @@
   private static final ImmutableMap<String, String> CUSTOM_CHAR_MAPPING =
       ImmutableMap.of("\\u002E", "\\u0020", "\\u005F", "\\u0020");
 
-  static SettingProperties createSetting() {
-    ElasticSetting.Builder settings = new ElasticSetting.Builder();
-    settings.addCharFilter();
-    settings.addAnalyzer();
-    return settings.build();
+  static SettingProperties createSetting(ElasticConfiguration config) {
+    return new ElasticSetting.Builder().addCharFilter().addAnalyzer().build(config);
   }
 
   static class Builder {
     private final ImmutableMap.Builder<String, FieldProperties> fields =
         new ImmutableMap.Builder<>();
 
-    SettingProperties build() {
+    SettingProperties build(ElasticConfiguration config) {
       SettingProperties properties = new SettingProperties();
       properties.analysis = fields.build();
+      properties.numberOfShards = config.numberOfShards;
+      properties.numberOfReplicas = config.numberOfReplicas;
       return properties;
     }
 
-    void addCharFilter() {
+    Builder addCharFilter() {
       FieldProperties charMapping = new FieldProperties("mapping");
       charMapping.mappings = getCustomCharMappings(CUSTOM_CHAR_MAPPING);
 
       FieldProperties charFilter = new FieldProperties();
       charFilter.customMapping = charMapping;
       fields.put("char_filter", charFilter);
+      return this;
     }
 
-    void addAnalyzer() {
+    Builder addAnalyzer() {
       FieldProperties customAnalyzer = new FieldProperties("custom");
       customAnalyzer.tokenizer = "standard";
       customAnalyzer.charFilter = new String[] {"custom_mapping"};
@@ -57,6 +57,7 @@
       FieldProperties analyzer = new FieldProperties();
       analyzer.customWithCharFilter = customAnalyzer;
       fields.put("analyzer", analyzer);
+      return this;
     }
 
     private static String[] getCustomCharMappings(ImmutableMap<String, String> map) {
@@ -72,6 +73,8 @@
 
   static class SettingProperties {
     Map<String, FieldProperties> analysis;
+    Integer numberOfShards;
+    Integer numberOfReplicas;
   }
 
   static class FieldProperties {
diff --git a/java/com/google/gerrit/elasticsearch/ElasticVersion.java b/java/com/google/gerrit/elasticsearch/ElasticVersion.java
index 4c98df1..b69f8f9 100644
--- a/java/com/google/gerrit/elasticsearch/ElasticVersion.java
+++ b/java/com/google/gerrit/elasticsearch/ElasticVersion.java
@@ -18,12 +18,12 @@
 import java.util.regex.Pattern;
 
 public enum ElasticVersion {
-  V2_4("2.4.*"),
   V5_6("5.6.*"),
   V6_2("6.2.*"),
   V6_3("6.3.*"),
   V6_4("6.4.*"),
-  V6_5("6.5.*");
+  V6_5("6.5.*"),
+  V7_0("7.0.*");
 
   private final String version;
   private final Pattern pattern;
@@ -56,8 +56,16 @@
     return Joiner.on(", ").join(ElasticVersion.values());
   }
 
-  public boolean isV6() {
-    return version.startsWith("6.");
+  public boolean isV6OrLater() {
+    return isAtLeastVersion(6);
+  }
+
+  public boolean isV7OrLater() {
+    return isAtLeastVersion(7);
+  }
+
+  private boolean isAtLeastVersion(int v) {
+    return Integer.valueOf(version.split("\\.")[0]) >= v;
   }
 
   @Override
diff --git a/java/com/google/gerrit/extensions/client/MenuItem.java b/java/com/google/gerrit/extensions/client/MenuItem.java
index 8375bba..0c7dd88 100644
--- a/java/com/google/gerrit/extensions/client/MenuItem.java
+++ b/java/com/google/gerrit/extensions/client/MenuItem.java
@@ -22,11 +22,6 @@
   public final String target;
   public final String id;
 
-  // Needed for GWT
-  public MenuItem() {
-    this(null, null, null, null);
-  }
-
   public MenuItem(String name, String url) {
     this(name, url, "_blank");
   }
diff --git a/java/com/google/gerrit/httpd/restapi/LogRedactUtil.java b/java/com/google/gerrit/httpd/restapi/LogRedactUtil.java
index 5a2a033..5a37b7b 100644
--- a/java/com/google/gerrit/httpd/restapi/LogRedactUtil.java
+++ b/java/com/google/gerrit/httpd/restapi/LogRedactUtil.java
@@ -12,8 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// WARNING: NoteDbUpdateManager cares about the package name RestApiServlet lives in.
-
 package com.google.gerrit.httpd.restapi;
 
 import static com.google.gerrit.httpd.restapi.RestApiServlet.XD_AUTHORIZATION;
diff --git a/java/com/google/gerrit/reviewdb/client/AccountGroup.java b/java/com/google/gerrit/reviewdb/client/AccountGroup.java
index c7dc420..5ec98fc 100644
--- a/java/com/google/gerrit/reviewdb/client/AccountGroup.java
+++ b/java/com/google/gerrit/reviewdb/client/AccountGroup.java
@@ -18,6 +18,7 @@
 import com.google.gwtorm.client.IntKey;
 import com.google.gwtorm.client.StringKey;
 import java.sql.Timestamp;
+import java.time.Instant;
 import java.util.Objects;
 
 /** Named group of one or more accounts, typically used for access controls. */
@@ -26,12 +27,10 @@
    * Time when the audit subsystem was implemented, used as the default value for {@link #createdOn}
    * when one couldn't be determined from the audit log.
    */
-  // Can't use Instant here because GWT. This is verified against a readable time in the tests,
-  // which don't need to compile under GWT.
-  private static final long AUDIT_CREATION_INSTANT_MS = 1244489460000L;
+  private static final Instant AUDIT_CREATION_INSTANT_MS = Instant.ofEpochMilli(1244489460000L);
 
   public static Timestamp auditCreationInstantTs() {
-    return new Timestamp(AUDIT_CREATION_INSTANT_MS);
+    return Timestamp.from(AUDIT_CREATION_INSTANT_MS);
   }
 
   /** Group name key */
diff --git a/java/com/google/gerrit/server/WebLinks.java b/java/com/google/gerrit/server/WebLinks.java
index 39a2328..589344c 100644
--- a/java/com/google/gerrit/server/WebLinks.java
+++ b/java/com/google/gerrit/server/WebLinks.java
@@ -19,7 +19,6 @@
 import com.google.common.base.Strings;
 import com.google.common.collect.FluentIterable;
 import com.google.common.flogger.FluentLogger;
-import com.google.gerrit.common.data.WebLinkInfoCommon;
 import com.google.gerrit.extensions.common.DiffWebLinkInfo;
 import com.google.gerrit.extensions.common.WebLinkInfo;
 import com.google.gerrit.extensions.registration.DynamicSet;
@@ -54,17 +53,6 @@
         return true;
       };
 
-  private static final Predicate<WebLinkInfoCommon> INVALID_WEBLINK_COMMON =
-      link -> {
-        if (link == null) {
-          return false;
-        } else if (Strings.isNullOrEmpty(link.name) || Strings.isNullOrEmpty(link.url)) {
-          logger.atWarning().log("%s is missing name and/or url", link.getClass().getName());
-          return false;
-        }
-        return true;
-      };
-
   private final DynamicSet<PatchSetWebLink> patchSetLinks;
   private final DynamicSet<ParentWebLink> parentLinks;
   private final DynamicSet<FileWebLink> fileLinks;
@@ -130,25 +118,13 @@
    * @param file File name.
    * @return Links for file history
    */
-  public List<WebLinkInfoCommon> getFileHistoryLinks(String project, String revision, String file) {
+  public List<WebLinkInfo> getFileHistoryLinks(String project, String revision, String file) {
     if (Patch.isMagic(file)) {
       return Collections.emptyList();
     }
     return FluentIterable.from(fileHistoryLinks)
-        .transform(
-            webLink -> {
-              WebLinkInfo info = webLink.getFileHistoryWebLink(project, revision, file);
-              if (info == null) {
-                return null;
-              }
-              WebLinkInfoCommon commonInfo = new WebLinkInfoCommon();
-              commonInfo.name = info.name;
-              commonInfo.imageUrl = info.imageUrl;
-              commonInfo.url = info.url;
-              commonInfo.target = info.target;
-              return commonInfo;
-            })
-        .filter(INVALID_WEBLINK_COMMON)
+        .transform(webLink -> webLink.getFileHistoryWebLink(project, revision, file))
+        .filter(INVALID_WEBLINK)
         .toList();
   }
 
diff --git a/java/com/google/gerrit/server/change/ReviewerJson.java b/java/com/google/gerrit/server/change/ReviewerJson.java
index 6502569..ef2c926 100644
--- a/java/com/google/gerrit/server/change/ReviewerJson.java
+++ b/java/com/google/gerrit/server/change/ReviewerJson.java
@@ -23,6 +23,7 @@
 import com.google.gerrit.common.data.SubmitRecord;
 import com.google.gerrit.extensions.api.changes.ReviewerInfo;
 import com.google.gerrit.extensions.restapi.AuthException;
+import com.google.gerrit.mail.Address;
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.PatchSet;
 import com.google.gerrit.reviewdb.client.PatchSetApproval;
@@ -77,12 +78,15 @@
       if (cd == null || !cd.getId().equals(rsrc.getChangeId())) {
         cd = changeDataFactory.create(db.get(), rsrc.getChangeResource().getNotes());
       }
-      ReviewerInfo info =
-          format(
-              new ReviewerInfo(rsrc.getReviewerUser().getAccountId().get()),
-              rsrc.getReviewerUser().getAccountId(),
-              cd);
-      loader.put(info);
+      ReviewerInfo info;
+      if (rsrc.isByEmail()) {
+        Address address = rsrc.getReviewerByEmail();
+        info = ReviewerInfo.byEmail(address.getName(), address.getEmail());
+      } else {
+        Account.Id reviewerAccountId = rsrc.getReviewerUser().getAccountId();
+        info = format(new ReviewerInfo(reviewerAccountId.get()), reviewerAccountId, cd);
+        loader.put(info);
+      }
       infos.add(info);
     }
     loader.fill();
@@ -94,19 +98,21 @@
     return format(ImmutableList.<ReviewerResource>of(rsrc));
   }
 
-  public ReviewerInfo format(ReviewerInfo out, Account.Id reviewer, ChangeData cd)
+  public ReviewerInfo format(ReviewerInfo out, Account.Id reviewerAccountId, ChangeData cd)
       throws OrmException, PermissionBackendException {
     PatchSet.Id psId = cd.change().currentPatchSetId();
     return format(
         out,
-        reviewer,
+        reviewerAccountId,
         cd,
-        approvalsUtil.byPatchSetUser(
-            db.get(), cd.notes(), psId, new Account.Id(out._accountId), null, null));
+        approvalsUtil.byPatchSetUser(db.get(), cd.notes(), psId, reviewerAccountId, null, null));
   }
 
   public ReviewerInfo format(
-      ReviewerInfo out, Account.Id reviewer, ChangeData cd, Iterable<PatchSetApproval> approvals)
+      ReviewerInfo out,
+      Account.Id reviewerAccountId,
+      ChangeData cd,
+      Iterable<PatchSetApproval> approvals)
       throws OrmException, PermissionBackendException {
     LabelTypes labelTypes = cd.getLabelTypes();
 
@@ -123,7 +129,7 @@
     PatchSet ps = cd.currentPatchSet();
     if (ps != null) {
       PermissionBackend.ForChange perm =
-          permissionBackend.absentUser(reviewer).database(db).change(cd);
+          permissionBackend.absentUser(reviewerAccountId).database(db).change(cd);
 
       for (SubmitRecord rec : submitRuleEvaluator.evaluate(cd)) {
         if (rec.labels == null) {
diff --git a/java/com/google/gerrit/server/config/DefaultUrlFormatter.java b/java/com/google/gerrit/server/config/DefaultUrlFormatter.java
index 70fb465..060ee3f 100644
--- a/java/com/google/gerrit/server/config/DefaultUrlFormatter.java
+++ b/java/com/google/gerrit/server/config/DefaultUrlFormatter.java
@@ -14,6 +14,7 @@
 
 package com.google.gerrit.server.config;
 
+import com.google.gerrit.extensions.registration.DynamicItem;
 import com.google.inject.AbstractModule;
 import com.google.inject.Inject;
 import com.google.inject.Provider;
@@ -27,7 +28,8 @@
   public static class Module extends AbstractModule {
     @Override
     protected void configure() {
-      bind(UrlFormatter.class).to(DefaultUrlFormatter.class);
+      DynamicItem.itemOf(binder(), UrlFormatter.class);
+      DynamicItem.bind(binder(), UrlFormatter.class).to(DefaultUrlFormatter.class);
     }
   }
 
diff --git a/java/com/google/gerrit/server/git/receive/ReceiveCommits.java b/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
index c747533..a3b094a 100644
--- a/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
+++ b/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
@@ -1863,7 +1863,9 @@
 
   private static String readHEAD(Repository repo) {
     try {
-      return repo.getFullBranch();
+      String head = repo.getFullBranch();
+      logger.atFine().log("HEAD = %s", head);
+      return head;
     } catch (IOException e) {
       logger.atSevere().withCause(e).log("Cannot read HEAD symref");
       return null;
@@ -2725,10 +2727,13 @@
 
     /** prints a warning if the new PS has the same tree as the previous commit. */
     private void sameTreeWarning() throws IOException {
-      RevCommit newCommit = receivePack.getRevWalk().parseCommit(newCommitId);
+      RevWalk rw = receivePack.getRevWalk();
+      RevCommit newCommit = rw.parseCommit(newCommitId);
       RevCommit priorCommit = revisions.inverse().get(priorPatchSet);
 
       if (newCommit.getTree().equals(priorCommit.getTree())) {
+        rw.parseBody(newCommit);
+        rw.parseBody(priorCommit);
         boolean messageEq =
             Objects.equals(newCommit.getFullMessage(), priorCommit.getFullMessage());
         boolean parentsEq = parentsEqual(newCommit, priorCommit);
diff --git a/java/com/google/gerrit/server/restapi/project/GetAccess.java b/java/com/google/gerrit/server/restapi/project/GetAccess.java
index 8875d40..0f46535 100644
--- a/java/com/google/gerrit/server/restapi/project/GetAccess.java
+++ b/java/com/google/gerrit/server/restapi/project/GetAccess.java
@@ -30,13 +30,11 @@
 import com.google.gerrit.common.data.Permission;
 import com.google.gerrit.common.data.PermissionRule;
 import com.google.gerrit.common.data.RefConfigSection;
-import com.google.gerrit.common.data.WebLinkInfoCommon;
 import com.google.gerrit.extensions.api.access.AccessSectionInfo;
 import com.google.gerrit.extensions.api.access.PermissionInfo;
 import com.google.gerrit.extensions.api.access.PermissionRuleInfo;
 import com.google.gerrit.extensions.api.access.ProjectAccessInfo;
 import com.google.gerrit.extensions.common.GroupInfo;
-import com.google.gerrit.extensions.common.WebLinkInfo;
 import com.google.gerrit.extensions.restapi.AuthException;
 import com.google.gerrit.extensions.restapi.ResourceConflictException;
 import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
@@ -149,13 +147,9 @@
 
       // config may have a null revision if the repo doesn't have its own refs/meta/config.
       if (config.getRevision() != null) {
-        // WebLinks operates in terms of the data types used in the GWT UI. Once the GWT UI is
-        // gone, WebLinks should be fixed to use the extension data types.
-        for (WebLinkInfoCommon wl :
+        info.configWebLinks.addAll(
             webLinks.getFileHistoryLinks(
-                projectName.get(), config.getRevision().getName(), ProjectConfig.PROJECT_CONFIG)) {
-          info.configWebLinks.add(new WebLinkInfo(wl.name, wl.imageUrl, wl.url, wl.target));
-        }
+                projectName.get(), config.getRevision().getName(), ProjectConfig.PROJECT_CONFIG));
       }
 
       if (config.updateGroupNames(groupBackend)) {
diff --git a/javatests/com/google/gerrit/acceptance/api/change/ChangeIT.java b/javatests/com/google/gerrit/acceptance/api/change/ChangeIT.java
index f2ee8e1..bb4b728 100644
--- a/javatests/com/google/gerrit/acceptance/api/change/ChangeIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/change/ChangeIT.java
@@ -2010,36 +2010,6 @@
   }
 
   @Test
-  public void implicitlyCcOnNonVotingReviewGwtStyle() throws Exception {
-    testImplicitlyCcOnNonVotingReviewGwtStyle(user);
-  }
-
-  @Test
-  public void implicitlyCcOnNonVotingReviewForUserWithoutUserNameGwtStyle() throws Exception {
-    com.google.gerrit.acceptance.TestAccount accountWithoutUsername = accountCreator.create();
-    assertThat(accountWithoutUsername.username).isNull();
-    testImplicitlyCcOnNonVotingReviewGwtStyle(accountWithoutUsername);
-  }
-
-  private void testImplicitlyCcOnNonVotingReviewGwtStyle(
-      com.google.gerrit.acceptance.TestAccount testAccount) throws Exception {
-    PushOneCommit.Result r = createChange();
-    setApiUser(testAccount);
-    assertThat(getReviewerState(r.getChangeId(), testAccount.id)).isEmpty();
-
-    // Exact request format made by GWT UI at ddc6b7160fe416fed9e7e3180489d44c82fd64f8.
-    ReviewInput in = new ReviewInput();
-    in.labels = ImmutableMap.of("Code-Review", (short) 0);
-    in.drafts = DraftHandling.PUBLISH_ALL_REVISIONS;
-    in.message = "comment";
-    gApi.changes().id(r.getChangeId()).revision(r.getCommit().name()).review(in);
-
-    // If we're not reading from NoteDb, then the CCed user will be returned in the REVIEWER state.
-    assertThat(getReviewerState(r.getChangeId(), testAccount.id))
-        .hasValue(notesMigration.readChanges() ? CC : REVIEWER);
-  }
-
-  @Test
   public void implicitlyAddReviewerOnVotingReview() throws Exception {
     PushOneCommit.Result r = createChange();
     setApiUser(user);
diff --git a/javatests/com/google/gerrit/acceptance/api/project/ProjectIT.java b/javatests/com/google/gerrit/acceptance/api/project/ProjectIT.java
index 995f89b..aa1ad7b 100644
--- a/javatests/com/google/gerrit/acceptance/api/project/ProjectIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/project/ProjectIT.java
@@ -31,6 +31,7 @@
 import com.google.gerrit.acceptance.GitUtil;
 import com.google.gerrit.acceptance.NoHttpd;
 import com.google.gerrit.acceptance.PushOneCommit;
+import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
 import com.google.gerrit.common.data.Permission;
 import com.google.gerrit.extensions.api.projects.BranchInput;
 import com.google.gerrit.extensions.api.projects.CommentLinkInfo;
@@ -73,6 +74,7 @@
   private static final String JIRA_MATCH = "(jira\\\\s+#?)(\\\\d+)";
 
   @Inject private DynamicSet<ProjectIndexedListener> projectIndexedListeners;
+  @Inject private ProjectOperations projectOperations;
 
   @Inject
   @IndexExecutor(BATCH)
@@ -429,7 +431,7 @@
 
   @Test
   public void reindexProject() throws Exception {
-    createProject("child", project);
+    projectOperations.newProject().parent(project).create();
     projectIndexedCounter.clear();
 
     gApi.projects().name(allProjects.get()).index(false);
@@ -438,8 +440,8 @@
 
   @Test
   public void reindexProjectWithChildren() throws Exception {
-    Project.NameKey middle = createProject("middle", project);
-    Project.NameKey leave = createProject("leave", middle);
+    Project.NameKey middle = projectOperations.newProject().parent(project).create();
+    Project.NameKey leave = projectOperations.newProject().parent(middle).create();
     projectIndexedCounter.clear();
 
     gApi.projects().name(project.get()).index(true);
@@ -473,7 +475,7 @@
   @Test
   @GerritConfig(name = "receive.inheritProjectMaxObjectSizeLimit", value = "true")
   public void maxObjectSizeIsInheritedFromParentProject() throws Exception {
-    Project.NameKey child = createProject(name("child"), project);
+    Project.NameKey child = projectOperations.newProject().parent(project).create();
 
     ConfigInfo info = setMaxObjectSize("100k");
     assertThat(info.maxObjectSizeLimit.value).isEqualTo("102400");
@@ -489,7 +491,7 @@
 
   @Test
   public void maxObjectSizeIsNotInheritedFromParentProject() throws Exception {
-    Project.NameKey child = createProject(name("child"), project);
+    Project.NameKey child = projectOperations.newProject().parent(project).create();
 
     ConfigInfo info = setMaxObjectSize("100k");
     assertThat(info.maxObjectSizeLimit.value).isEqualTo("102400");
@@ -504,7 +506,7 @@
 
   @Test
   public void maxObjectSizeOverridesParentProjectWhenNotSetOnParent() throws Exception {
-    Project.NameKey child = createProject(name("child"), project);
+    Project.NameKey child = projectOperations.newProject().parent(project).create();
 
     ConfigInfo info = setMaxObjectSize("0");
     assertThat(info.maxObjectSizeLimit.value).isNull();
@@ -519,7 +521,7 @@
 
   @Test
   public void maxObjectSizeOverridesParentProjectWhenLower() throws Exception {
-    Project.NameKey child = createProject(name("child"), project);
+    Project.NameKey child = projectOperations.newProject().parent(project).create();
 
     ConfigInfo info = setMaxObjectSize("200k");
     assertThat(info.maxObjectSizeLimit.value).isEqualTo("204800");
@@ -535,7 +537,7 @@
   @Test
   @GerritConfig(name = "receive.inheritProjectMaxObjectSizeLimit", value = "true")
   public void maxObjectSizeDoesNotOverrideParentProjectWhenHigher() throws Exception {
-    Project.NameKey child = createProject(name("child"), project);
+    Project.NameKey child = projectOperations.newProject().parent(project).create();
 
     ConfigInfo info = setMaxObjectSize("100k");
     assertThat(info.maxObjectSizeLimit.value).isEqualTo("102400");
@@ -552,7 +554,7 @@
   @Test
   @GerritConfig(name = "receive.maxObjectSizeLimit", value = "200k")
   public void maxObjectSizeIsInheritedFromGlobalConfig() throws Exception {
-    Project.NameKey child = createProject(name("child"), project);
+    Project.NameKey child = projectOperations.newProject().parent(project).create();
 
     ConfigInfo info = getConfig();
     assertThat(info.maxObjectSizeLimit.value).isEqualTo("204800");
@@ -577,7 +579,7 @@
   @Test
   @GerritConfig(name = "receive.maxObjectSizeLimit", value = "300k")
   public void inheritedMaxObjectSizeOverridesGlobalConfigWhenLower() throws Exception {
-    Project.NameKey child = createProject(name("child"), project);
+    Project.NameKey child = projectOperations.newProject().parent(project).create();
 
     ConfigInfo info = setMaxObjectSize("200k");
     assertThat(info.maxObjectSizeLimit.value).isEqualTo("204800");
@@ -594,7 +596,7 @@
   @GerritConfig(name = "receive.maxObjectSizeLimit", value = "200k")
   @GerritConfig(name = "receive.inheritProjectMaxObjectSizeLimit", value = "true")
   public void maxObjectSizeDoesNotOverrideGlobalConfigWhenHigher() throws Exception {
-    Project.NameKey child = createProject(name("child"), project);
+    Project.NameKey child = projectOperations.newProject().parent(project).create();
 
     ConfigInfo info = setMaxObjectSize("300k");
     assertThat(info.maxObjectSizeLimit.value).isEqualTo("204800");
diff --git a/javatests/com/google/gerrit/acceptance/api/project/ProjectIndexerIT.java b/javatests/com/google/gerrit/acceptance/api/project/ProjectIndexerIT.java
index 6fde012..6b511f6 100644
--- a/javatests/com/google/gerrit/acceptance/api/project/ProjectIndexerIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/project/ProjectIndexerIT.java
@@ -19,6 +19,7 @@
 
 import com.google.common.collect.ImmutableSet;
 import com.google.gerrit.acceptance.AbstractDaemonTest;
+import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
 import com.google.gerrit.index.IndexConfig;
 import com.google.gerrit.index.QueryOptions;
 import com.google.gerrit.index.RefState;
@@ -45,6 +46,7 @@
   @Inject private ProjectIndexCollection indexes;
   @Inject private IndexConfig indexConfig;
   @Inject private StalenessChecker stalenessChecker;
+  @Inject private ProjectOperations projectOperations;
 
   private static final ImmutableSet<String> FIELDS =
       ImmutableSet.of(ProjectField.NAME.getName(), ProjectField.REF_STATE.getName());
@@ -96,8 +98,8 @@
 
   @Test
   public void stalenessChecker_hierarchyChange_isStale() throws Exception {
-    Project.NameKey p1 = createProject("p1", allProjects);
-    Project.NameKey p2 = createProject("p2", allProjects);
+    Project.NameKey p1 = projectOperations.newProject().create();
+    Project.NameKey p2 = projectOperations.newProject().create();
     try (ProjectConfigUpdate u = updateProject(project)) {
       u.getConfig().getProject().setParentName(p1);
       u.save();
diff --git a/javatests/com/google/gerrit/acceptance/api/project/SetParentIT.java b/javatests/com/google/gerrit/acceptance/api/project/SetParentIT.java
index 3295f1a..c21798c 100644
--- a/javatests/com/google/gerrit/acceptance/api/project/SetParentIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/project/SetParentIT.java
@@ -19,6 +19,7 @@
 import com.google.gerrit.acceptance.AbstractDaemonTest;
 import com.google.gerrit.acceptance.GerritConfig;
 import com.google.gerrit.acceptance.NoHttpd;
+import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
 import com.google.gerrit.common.data.Permission;
 import com.google.gerrit.extensions.restapi.AuthException;
 import com.google.gerrit.extensions.restapi.BadRequestException;
@@ -27,14 +28,17 @@
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.server.config.AllProjectsNameProvider;
 import com.google.gerrit.server.group.SystemGroupBackend;
+import com.google.inject.Inject;
 import org.junit.Test;
 
 @NoHttpd
 public class SetParentIT extends AbstractDaemonTest {
 
+  @Inject private ProjectOperations projectOperations;
+
   @Test
   public void setParentNotAllowed() throws Exception {
-    String parent = createProject("parent", null, true).get();
+    String parent = projectOperations.newProject().create().get();
     setApiUser(user);
     exception.expect(AuthException.class);
     gApi.projects().name(project.get()).parent(parent);
@@ -43,7 +47,7 @@
   @Test
   @GerritConfig(name = "receive.allowProjectOwnersToChangeParent", value = "true")
   public void setParentNotAllowedForNonOwners() throws Exception {
-    String parent = createProject("parent", null, true).get();
+    String parent = projectOperations.newProject().create().get();
     setApiUser(user);
     exception.expect(AuthException.class);
     gApi.projects().name(project.get()).parent(parent);
@@ -52,7 +56,7 @@
   @Test
   @GerritConfig(name = "receive.allowProjectOwnersToChangeParent", value = "true")
   public void setParentAllowedByAdminWhenAllowProjectOwnersEnabled() throws Exception {
-    String parent = createProject("parent", null, true).get();
+    String parent = projectOperations.newProject().create().get();
 
     gApi.projects().name(project.get()).parent(parent);
     assertThat(gApi.projects().name(project.get()).parent()).isEqualTo(parent);
@@ -67,7 +71,7 @@
   @Test
   @GerritConfig(name = "receive.allowProjectOwnersToChangeParent", value = "true")
   public void setParentAllowedForOwners() throws Exception {
-    String parent = createProject("parent", null, true).get();
+    String parent = projectOperations.newProject().create().get();
     setApiUser(user);
     grant(project, "refs/*", Permission.OWNER, false, SystemGroupBackend.REGISTERED_USERS);
     gApi.projects().name(project.get()).parent(parent);
@@ -76,7 +80,7 @@
 
   @Test
   public void setParent() throws Exception {
-    String parent = createProject("parent", null, true).get();
+    String parent = projectOperations.newProject().create().get();
 
     gApi.projects().name(project.get()).parent(parent);
     assertThat(gApi.projects().name(project.get()).parent()).isEqualTo(parent);
@@ -104,7 +108,7 @@
 
   @Test
   public void setParentToOwnChildNotAllowed() throws Exception {
-    String child = createProject("child", project, true).get();
+    String child = projectOperations.newProject().parent(project).create().get();
     exception.expect(ResourceConflictException.class);
     exception.expectMessage("cycle exists between");
     gApi.projects().name(project.get()).parent(child);
@@ -112,8 +116,8 @@
 
   @Test
   public void setParentToGrandchildNotAllowed() throws Exception {
-    Project.NameKey child = createProject("child", project, true);
-    String grandchild = createProject("grandchild", child, true).get();
+    Project.NameKey child = projectOperations.newProject().parent(project).create();
+    String grandchild = projectOperations.newProject().parent(child).create().get();
     exception.expect(ResourceConflictException.class);
     exception.expectMessage("cycle exists between");
     gApi.projects().name(project.get()).parent(grandchild);
@@ -137,7 +141,7 @@
   public void setParentForAllUsersMustBeAllProjects() throws Exception {
     gApi.projects().name(allUsers.get()).parent(allProjects.get());
 
-    String parent = createProject("parent", null, true).get();
+    String parent = projectOperations.newProject().create().get();
 
     exception.expect(BadRequestException.class);
     exception.expectMessage("All-Users must inherit from All-Projects");
diff --git a/javatests/com/google/gerrit/acceptance/git/AbstractPushForReview.java b/javatests/com/google/gerrit/acceptance/git/AbstractPushForReview.java
index a5ff746..5e82f84 100644
--- a/javatests/com/google/gerrit/acceptance/git/AbstractPushForReview.java
+++ b/javatests/com/google/gerrit/acceptance/git/AbstractPushForReview.java
@@ -220,6 +220,48 @@
 
   @Test
   @TestProjectInput(createEmptyCommit = false)
+  public void pushInitialCommitSeriesForMasterBranch() throws Exception {
+    RevCommit c = testRepo.commit().message("Initial commit").insertChangeId().create();
+    String id = GitUtil.getChangeId(testRepo, c).get();
+    testRepo.reset(c);
+
+    RevCommit c2 = testRepo.commit().parent(c).message("Second commit").insertChangeId().create();
+    String id2 = GitUtil.getChangeId(testRepo, c2).get();
+    testRepo.reset(c2);
+
+    String r = "refs/for/master";
+    PushResult pr = pushHead(testRepo, r, false);
+    assertPushOk(pr, r);
+
+    ChangeInfo change = gApi.changes().id(id).info();
+    assertThat(change.branch).isEqualTo("master");
+    assertThat(change.status).isEqualTo(ChangeStatus.NEW);
+
+    ChangeInfo change2 = gApi.changes().id(id2).info();
+    assertThat(change2.branch).isEqualTo("master");
+    assertThat(change2.status).isEqualTo(ChangeStatus.NEW);
+
+    try (Repository repo = repoManager.openRepository(project)) {
+      assertThat(repo.resolve("master")).isNull();
+    }
+
+    gApi.changes().id(change.id).current().review(ReviewInput.approve());
+    gApi.changes().id(change.id).current().submit();
+
+    try (Repository repo = repoManager.openRepository(project)) {
+      assertThat(repo.resolve("master")).isEqualTo(c);
+    }
+
+    gApi.changes().id(change2.id).current().review(ReviewInput.approve());
+    gApi.changes().id(change2.id).current().submit();
+
+    try (Repository repo = repoManager.openRepository(project)) {
+      assertThat(repo.resolve("master")).isEqualTo(c2);
+    }
+  }
+
+  @Test
+  @TestProjectInput(createEmptyCommit = false)
   public void validateConnected() throws Exception {
     RevCommit c = testRepo.commit().message("Initial commit").insertChangeId().create();
     testRepo.reset(c);
@@ -1422,14 +1464,7 @@
 
   @Test
   public void pushSameCommitTwice() throws Exception {
-    try (ProjectConfigUpdate u = updateProject(project)) {
-      u.getConfig()
-          .getProject()
-          .setBooleanConfig(
-              BooleanProjectConfig.CREATE_NEW_CHANGE_FOR_ALL_NOT_IN_TARGET,
-              InheritableBoolean.TRUE);
-      u.save();
-    }
+    enableCreateNewChangeForAllNotInTarget();
 
     PushOneCommit push =
         pushFactory.create(
@@ -1451,14 +1486,7 @@
 
   @Test
   public void pushSameCommitTwiceWhenIndexFailed() throws Exception {
-    try (ProjectConfigUpdate u = updateProject(project)) {
-      u.getConfig()
-          .getProject()
-          .setBooleanConfig(
-              BooleanProjectConfig.CREATE_NEW_CHANGE_FOR_ALL_NOT_IN_TARGET,
-              InheritableBoolean.TRUE);
-      u.save();
-    }
+    enableCreateNewChangeForAllNotInTarget();
 
     PushOneCommit push =
         pushFactory.create(
@@ -2314,6 +2342,113 @@
     assertPushOk(pr, "refs/heads/permitted");
   }
 
+  @Test
+  public void pushCommitsWithSameTreeNoChanges() throws Exception {
+    RevCommit c =
+        testRepo
+            .commit()
+            .message("Foo")
+            .parent(getHead(testRepo.getRepository()))
+            .insertChangeId()
+            .create();
+    testRepo.reset(c);
+
+    String r = "refs/for/master";
+    PushResult pr = pushHead(testRepo, r, false);
+    assertPushOk(pr, r);
+
+    RevCommit amended = testRepo.amend(c).create();
+    testRepo.reset(amended);
+
+    pr = pushHead(testRepo, r, false);
+    assertPushOk(pr, r);
+    assertThat(pr.getMessages())
+        .contains(
+            "warning: no changes between prior commit "
+                + c.abbreviate(7).name()
+                + " and new commit "
+                + amended.abbreviate(7).name());
+  }
+
+  @Test
+  public void pushCommitsWithSameTreeNoFilesChangedMessageUpdated() throws Exception {
+    RevCommit c =
+        testRepo
+            .commit()
+            .message("Foo")
+            .parent(getHead(testRepo.getRepository()))
+            .insertChangeId()
+            .create();
+    String id = GitUtil.getChangeId(testRepo, c).get();
+    testRepo.reset(c);
+
+    String r = "refs/for/master";
+    PushResult pr = pushHead(testRepo, r, false);
+    assertPushOk(pr, r);
+
+    RevCommit amended =
+        testRepo.amend(c).message("Foo Bar").insertChangeId(id.substring(1)).create();
+    testRepo.reset(amended);
+
+    pr = pushHead(testRepo, r, false);
+    assertPushOk(pr, r);
+    assertThat(pr.getMessages())
+        .contains(
+            "warning: " + amended.abbreviate(7).name() + ": no files changed, message updated");
+  }
+
+  @Test
+  public void pushCommitsWithSameTreeNoFilesChangedAuthorChanged() throws Exception {
+    RevCommit c =
+        testRepo
+            .commit()
+            .message("Foo")
+            .parent(getHead(testRepo.getRepository()))
+            .insertChangeId()
+            .create();
+    testRepo.reset(c);
+
+    String r = "refs/for/master";
+    PushResult pr = pushHead(testRepo, r, false);
+    assertPushOk(pr, r);
+
+    RevCommit amended = testRepo.amend(c).author(user.getIdent()).create();
+    testRepo.reset(amended);
+
+    pr = pushHead(testRepo, r, false);
+    assertPushOk(pr, r);
+    assertThat(pr.getMessages())
+        .contains(
+            "warning: " + amended.abbreviate(7).name() + ": no files changed, author changed");
+  }
+
+  @Test
+  public void pushCommitsWithSameTreeNoFilesChangedWasRebased() throws Exception {
+    RevCommit head = getHead(testRepo.getRepository());
+    RevCommit c = testRepo.commit().message("Foo").parent(head).insertChangeId().create();
+    testRepo.reset(c);
+
+    String r = "refs/for/master";
+    PushResult pr = pushHead(testRepo, r, false);
+    assertPushOk(pr, r);
+
+    testRepo.reset(head);
+    RevCommit newBase = testRepo.commit().message("Base").parent(head).insertChangeId().create();
+    testRepo.reset(newBase);
+
+    pr = pushHead(testRepo, r, false);
+    assertPushOk(pr, r);
+
+    testRepo.reset(c);
+    RevCommit amended = testRepo.amend(c).parent(newBase).create();
+    testRepo.reset(amended);
+
+    pr = pushHead(testRepo, r, false);
+    assertPushOk(pr, r);
+    assertThat(pr.getMessages())
+        .contains("warning: " + amended.abbreviate(7).name() + ": no files changed, was rebased");
+  }
+
   private DraftInput newDraft(String path, int line, String message) {
     DraftInput d = new DraftInput();
     d.path = path;
diff --git a/javatests/com/google/gerrit/acceptance/git/AbstractSubmoduleSubscription.java b/javatests/com/google/gerrit/acceptance/git/AbstractSubmoduleSubscription.java
index 28a45c3..58051bb 100644
--- a/javatests/com/google/gerrit/acceptance/git/AbstractSubmoduleSubscription.java
+++ b/javatests/com/google/gerrit/acceptance/git/AbstractSubmoduleSubscription.java
@@ -20,7 +20,6 @@
 import com.google.common.collect.Iterables;
 import com.google.gerrit.acceptance.AbstractDaemonTest;
 import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
-import com.google.gerrit.common.Nullable;
 import com.google.gerrit.common.data.Permission;
 import com.google.gerrit.common.data.SubscribeSection;
 import com.google.gerrit.extensions.client.SubmitType;
@@ -104,15 +103,14 @@
     return cfg;
   }
 
-  protected Project.NameKey createProjectForPush(
-      String name,
-      @Nullable Project.NameKey parent,
-      boolean createEmptyCommit,
-      SubmitType submitType)
-      throws Exception {
-    Project.NameKey project = createProject(name, parent, createEmptyCommit, submitType);
+  protected void grantPush(Project.NameKey project) throws Exception {
     grant(project, "refs/heads/*", Permission.PUSH);
     grant(project, "refs/for/refs/heads/*", Permission.SUBMIT);
+  }
+
+  protected Project.NameKey createProjectForPush(SubmitType submitType) throws Exception {
+    Project.NameKey project = projectOperations.newProject().submitType(submitType).create();
+    grantPush(project);
     return project;
   }
 
@@ -120,8 +118,8 @@
 
   @Before
   public void setUp() throws Exception {
-    superKey = createProjectForPush("super", null, true, getSubmitType());
-    subKey = createProjectForPush("sub", null, true, getSubmitType());
+    superKey = createProjectForPush(getSubmitType());
+    subKey = createProjectForPush(getSubmitType());
     superRepo = cloneProject(superKey);
     subRepo = cloneProject(subKey);
   }
diff --git a/javatests/com/google/gerrit/acceptance/git/SubmoduleSubscriptionsIT.java b/javatests/com/google/gerrit/acceptance/git/SubmoduleSubscriptionsIT.java
index 8317ab1..72ba420 100644
--- a/javatests/com/google/gerrit/acceptance/git/SubmoduleSubscriptionsIT.java
+++ b/javatests/com/google/gerrit/acceptance/git/SubmoduleSubscriptionsIT.java
@@ -403,12 +403,15 @@
 
   @Test
   public void subscriptionInheritACL() throws Exception {
-    Project.NameKey configKey = createProjectForPush("config-repo", null, true, getSubmitType());
+    Project.NameKey configKey = projectOperations.newProject().submitType(getSubmitType()).create();
+    grantPush(configKey);
     Project.NameKey config2Key =
-        createProjectForPush("config-repo2", configKey, true, getSubmitType());
+        projectOperations.newProject().parent(configKey).submitType(getSubmitType()).create();
+    grantPush(config2Key);
     cloneProject(config2Key);
 
-    subKey = createProjectForPush("subrepo", config2Key, true, getSubmitType());
+    subKey = projectOperations.newProject().parent(config2Key).submitType(getSubmitType()).create();
+    grantPush(subKey);
     subRepo = cloneProject(subKey);
 
     allowMatchingSubmoduleSubscription(configKey, "refs/heads/*", superKey, "refs/heads/*");
@@ -445,8 +448,7 @@
 
   @Test
   public void subscriptionDeepRelative() throws Exception {
-    Project.NameKey nest =
-        createProjectForPush("nested/subscribed-to-project", null, true, getSubmitType());
+    Project.NameKey nest = createProjectForPush(getSubmitType());
     TestRepository<?> subRepo = cloneProject(nest);
     // master is allowed to be subscribed to any superprojects branch:
     allowMatchingSubmoduleSubscription(nest, "refs/heads/master", superKey, null);
@@ -511,8 +513,7 @@
     TestTimeUtil.resetWithClockStep(1, SECONDS);
     try {
 
-      Project.NameKey proj2 =
-          createProjectForPush("subscribed-to-project-2", null, true, getSubmitType());
+      Project.NameKey proj2 = createProjectForPush(getSubmitType());
 
       TestRepository<?> subRepo2 = cloneProject(proj2);
       allowMatchingSubmoduleSubscription(
@@ -559,8 +560,7 @@
     // is afterwards.
     TestTimeUtil.resetWithClockStep(1, SECONDS);
     try {
-      Project.NameKey proj2 =
-          createProjectForPush("subscribed-to-project-2", null, true, getSubmitType());
+      Project.NameKey proj2 = createProjectForPush(getSubmitType());
       TestRepository<InMemoryRepository> repo2 = cloneProject(proj2, user);
 
       allowMatchingSubmoduleSubscription(
@@ -604,10 +604,8 @@
 
   @Test
   public void updateOnlyRelevantSubmodules() throws Exception {
-    Project.NameKey subkey1 =
-        createProjectForPush("subscribed-to-project-1", null, true, getSubmitType());
-    Project.NameKey subkey2 =
-        createProjectForPush("subscribed-to-project-2", null, true, getSubmitType());
+    Project.NameKey subkey1 = createProjectForPush(getSubmitType());
+    Project.NameKey subkey2 = createProjectForPush(getSubmitType());
     TestRepository<?> subRepo1 = cloneProject(subkey1);
     TestRepository<?> subRepo2 = cloneProject(subkey2);
 
diff --git a/javatests/com/google/gerrit/acceptance/git/SubmoduleSubscriptionsWholeTopicMergeIT.java b/javatests/com/google/gerrit/acceptance/git/SubmoduleSubscriptionsWholeTopicMergeIT.java
index 9983c3a..82b9cd0 100644
--- a/javatests/com/google/gerrit/acceptance/git/SubmoduleSubscriptionsWholeTopicMergeIT.java
+++ b/javatests/com/google/gerrit/acceptance/git/SubmoduleSubscriptionsWholeTopicMergeIT.java
@@ -21,7 +21,6 @@
 
 import com.google.common.collect.ImmutableList;
 import com.google.gerrit.acceptance.NoHttpd;
-import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
 import com.google.gerrit.common.data.Permission;
 import com.google.gerrit.extensions.api.changes.ReviewInput;
 import com.google.gerrit.extensions.client.ChangeStatus;
@@ -31,7 +30,6 @@
 import com.google.gerrit.reviewdb.client.Project.NameKey;
 import com.google.gerrit.server.change.TestSubmitInput;
 import com.google.gerrit.testing.ConfigSuite;
-import com.google.inject.Inject;
 import java.util.ArrayDeque;
 import java.util.Map;
 import org.apache.commons.lang.RandomStringUtils;
@@ -71,8 +69,6 @@
     return submitByRebaseIfNecessaryConfig();
   }
 
-  @Inject ProjectOperations projectOperations;
-
   @Test
   public void subscriptionUpdateOfManyChanges() throws Exception {
     allowMatchingSubmoduleSubscription(subKey, "refs/heads/master", superKey, "refs/heads/master");
@@ -367,8 +363,20 @@
   @Test
   public void doNotUseFastForward() throws Exception {
     // like setup, but without empty commit
-    superKey = createProjectForPush("super-nc", null, false, getSubmitType());
-    subKey = createProjectForPush("sub-nc", null, false, getSubmitType());
+    superKey =
+        projectOperations
+            .newProject()
+            .submitType(getSubmitType())
+            .createEmptyCommit(false)
+            .create();
+    grantPush(superKey);
+    subKey =
+        projectOperations
+            .newProject()
+            .submitType(getSubmitType())
+            .createEmptyCommit(false)
+            .create();
+    grantPush(subKey);
     superRepo = cloneProject(superKey);
     subRepo = cloneProject(subKey);
 
@@ -395,8 +403,20 @@
   @Test
   public void useFastForwardWhenNoSubmodule() throws Exception {
     // like setup, but without empty commit
-    superKey = createProjectForPush("super-nc", null, false, getSubmitType());
-    subKey = createProjectForPush("sub-nc", null, false, getSubmitType());
+    superKey =
+        projectOperations
+            .newProject()
+            .submitType(getSubmitType())
+            .createEmptyCommit(false)
+            .create();
+    grantPush(superKey);
+    subKey =
+        projectOperations
+            .newProject()
+            .submitType(getSubmitType())
+            .createEmptyCommit(false)
+            .create();
+    grantPush(subKey);
     superRepo = cloneProject(superKey);
     subRepo = cloneProject(subKey);
 
@@ -493,7 +513,7 @@
 
   @Test
   public void nonSubmoduleInSameTopic() throws Exception {
-    Project.NameKey standaloneKey = createProjectForPush("standalone", null, true, getSubmitType());
+    Project.NameKey standaloneKey = createProjectForPush(getSubmitType());
     TestRepository<?> standAlone = cloneProject(standaloneKey);
 
     allowMatchingSubmoduleSubscription(subKey, "refs/heads/master", superKey, "refs/heads/master");
@@ -533,9 +553,9 @@
 
   @Test
   public void recursiveSubmodules() throws Exception {
-    Project.NameKey topKey = createProjectForPush("top-project", null, true, getSubmitType());
-    Project.NameKey midKey = createProjectForPush("mid-project", null, true, getSubmitType());
-    Project.NameKey botKey = createProjectForPush("bottom-project", null, true, getSubmitType());
+    Project.NameKey topKey = createProjectForPush(getSubmitType());
+    Project.NameKey midKey = createProjectForPush(getSubmitType());
+    Project.NameKey botKey = createProjectForPush(getSubmitType());
     TestRepository<?> topRepo = cloneProject(topKey);
     TestRepository<?> midRepo = cloneProject(midKey);
     TestRepository<?> bottomRepo = cloneProject(botKey);
@@ -563,9 +583,9 @@
 
   @Test
   public void triangleSubmodules() throws Exception {
-    Project.NameKey topKey = createProjectForPush("top-project", null, true, getSubmitType());
-    Project.NameKey midKey = createProjectForPush("mid-project", null, true, getSubmitType());
-    Project.NameKey botKey = createProjectForPush("bottom-project", null, true, getSubmitType());
+    Project.NameKey topKey = createProjectForPush(getSubmitType());
+    Project.NameKey midKey = createProjectForPush(getSubmitType());
+    Project.NameKey botKey = createProjectForPush(getSubmitType());
     TestRepository<?> topRepo = cloneProject(topKey);
     TestRepository<?> midRepo = cloneProject(midKey);
     TestRepository<?> bottomRepo = cloneProject(botKey);
@@ -597,9 +617,9 @@
   }
 
   private String prepareBranchCircularSubscription() throws Exception {
-    Project.NameKey topKey = createProjectForPush("top-project", null, true, getSubmitType());
-    Project.NameKey midKey = createProjectForPush("mid-project", null, true, getSubmitType());
-    Project.NameKey botKey = createProjectForPush("bottom-project", null, true, getSubmitType());
+    Project.NameKey topKey = createProjectForPush(getSubmitType());
+    Project.NameKey midKey = createProjectForPush(getSubmitType());
+    Project.NameKey botKey = createProjectForPush(getSubmitType());
     TestRepository<?> topRepo = cloneProject(topKey);
     TestRepository<?> midRepo = cloneProject(midKey);
     TestRepository<?> bottomRepo = cloneProject(botKey);
@@ -662,8 +682,8 @@
 
   @Test
   public void projectNoSubscriptionWholeTopic() throws Exception {
-    Project.NameKey keyA = createProjectForPush("project-a", null, true, getSubmitType());
-    Project.NameKey keyB = createProjectForPush("project-b", null, true, getSubmitType());
+    Project.NameKey keyA = createProjectForPush(getSubmitType());
+    Project.NameKey keyB = createProjectForPush(getSubmitType());
 
     TestRepository<?> repoA = cloneProject(keyA);
     TestRepository<?> repoB = cloneProject(keyB);
@@ -733,8 +753,8 @@
 
   @Test
   public void twoProjectsMultipleBranchesWholeTopic() throws Exception {
-    Project.NameKey keyA = createProjectForPush("project-a", null, true, getSubmitType());
-    Project.NameKey keyB = createProjectForPush("project-b", null, true, getSubmitType());
+    Project.NameKey keyA = createProjectForPush(getSubmitType());
+    Project.NameKey keyB = createProjectForPush(getSubmitType());
     TestRepository<?> repoA = cloneProject(keyA);
     TestRepository<?> repoB = cloneProject(keyB);
     // bootstrap the dev branch
@@ -782,9 +802,9 @@
   public void retrySubmitAfterTornTopicOnLockFailure() throws Exception {
     assume().that(notesMigration.disableChangeReviewDb()).isTrue();
 
-    Project.NameKey subKey1 = createProjectForPush("sub1", null, true, getSubmitType());
+    Project.NameKey subKey1 = createProjectForPush(getSubmitType());
     TestRepository<?> sub1 = cloneProject(subKey1);
-    Project.NameKey subKey2 = createProjectForPush("sub2", null, true, getSubmitType());
+    Project.NameKey subKey2 = createProjectForPush(getSubmitType());
     TestRepository<?> sub2 = cloneProject(subKey2);
 
     allowMatchingSubmoduleSubscription(subKey1, "refs/heads/master", superKey, "refs/heads/master");
@@ -844,9 +864,9 @@
 
   @Test
   public void skipUpdatingBrokenGitlinkPointer() throws Exception {
-    Project.NameKey subKey1 = createProjectForPush("sub1", null, true, getSubmitType());
+    Project.NameKey subKey1 = createProjectForPush(getSubmitType());
     TestRepository<?> sub1 = cloneProject(subKey1);
-    Project.NameKey subKey2 = createProjectForPush("sub2", null, true, getSubmitType());
+    Project.NameKey subKey2 = createProjectForPush(getSubmitType());
     TestRepository<?> sub2 = cloneProject(subKey2);
 
     allowMatchingSubmoduleSubscription(subKey1, "refs/heads/master", superKey, "refs/heads/master");
diff --git a/javatests/com/google/gerrit/acceptance/pgm/ElasticReindexIT.java b/javatests/com/google/gerrit/acceptance/pgm/ElasticReindexIT.java
index 29a5bd0..bb7cff7 100644
--- a/javatests/com/google/gerrit/acceptance/pgm/ElasticReindexIT.java
+++ b/javatests/com/google/gerrit/acceptance/pgm/ElasticReindexIT.java
@@ -26,11 +26,6 @@
 public class ElasticReindexIT extends AbstractReindexTests {
 
   @ConfigSuite.Default
-  public static Config elasticsearchV2() {
-    return getConfig(ElasticVersion.V2_4);
-  }
-
-  @ConfigSuite.Config
   public static Config elasticsearchV5() {
     return getConfig(ElasticVersion.V5_6);
   }
@@ -40,6 +35,11 @@
     return getConfig(ElasticVersion.V6_5);
   }
 
+  @ConfigSuite.Config
+  public static Config elasticsearchV7() {
+    return getConfig(ElasticVersion.V7_0);
+  }
+
   @Override
   public void configureIndex(Injector injector) throws Exception {
     createAllIndexes(injector);
diff --git a/javatests/com/google/gerrit/acceptance/rest/account/WatchedProjectsIT.java b/javatests/com/google/gerrit/acceptance/rest/account/WatchedProjectsIT.java
index ae0483b..f9bc539 100644
--- a/javatests/com/google/gerrit/acceptance/rest/account/WatchedProjectsIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/account/WatchedProjectsIT.java
@@ -61,8 +61,8 @@
 
   @Test
   public void setAndDeleteWatchedProjects() throws Exception {
-    String projectName1 = this.projectOperations.newProject().create().get();
-    String projectName2 = this.projectOperations.newProject().create().get();
+    String projectName1 = projectOperations.newProject().create().get();
+    String projectName2 = projectOperations.newProject().create().get();
 
     List<ProjectWatchInfo> projectsToWatch = new ArrayList<>();
 
@@ -95,7 +95,7 @@
 
   @Test
   public void setConflictingWatches() throws Exception {
-    String projectName = this.projectOperations.newProject().create().get();
+    String projectName = projectOperations.newProject().create().get();
 
     List<ProjectWatchInfo> projectsToWatch = new ArrayList<>();
 
@@ -119,7 +119,7 @@
 
   @Test
   public void setAndGetEmptyWatch() throws Exception {
-    String projectName = this.projectOperations.newProject().create().get();
+    String projectName = projectOperations.newProject().create().get();
 
     List<ProjectWatchInfo> projectsToWatch = new ArrayList<>();
 
diff --git a/javatests/com/google/gerrit/acceptance/rest/binding/ProjectsRestApiBindingsIT.java b/javatests/com/google/gerrit/acceptance/rest/binding/ProjectsRestApiBindingsIT.java
index 0c18dbb..c838cf9 100644
--- a/javatests/com/google/gerrit/acceptance/rest/binding/ProjectsRestApiBindingsIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/binding/ProjectsRestApiBindingsIT.java
@@ -27,11 +27,13 @@
 import com.google.gerrit.acceptance.GitUtil;
 import com.google.gerrit.acceptance.rest.util.RestApiCallHelper;
 import com.google.gerrit.acceptance.rest.util.RestCall;
+import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
 import com.google.gerrit.common.data.Permission;
 import com.google.gerrit.extensions.api.changes.ReviewInput;
 import com.google.gerrit.extensions.api.projects.BranchInput;
 import com.google.gerrit.extensions.api.projects.TagInput;
 import com.google.gerrit.reviewdb.client.Project;
+import com.google.inject.Inject;
 import org.eclipse.jgit.junit.TestRepository;
 import org.eclipse.jgit.lib.Repository;
 import org.eclipse.jgit.revwalk.RevCommit;
@@ -156,6 +158,7 @@
       ImmutableList.of(RestCall.get("/projects/%s/commits/%s/files/%s/content"));
 
   private static final String FILENAME = "test.txt";
+  @Inject private ProjectOperations projectOperations;
 
   @Test
   public void projectEndpoints() throws Exception {
@@ -164,7 +167,7 @@
 
   @Test
   public void childProjectEndpoints() throws Exception {
-    Project.NameKey childProject = createProject("test-child-repo", project);
+    Project.NameKey childProject = projectOperations.newProject().parent(project).create();
     RestApiCallHelper.execute(
         adminRestSession, CHILD_PROJECT_ENDPOINTS, project.get(), childProject.get());
   }
diff --git a/javatests/com/google/gerrit/acceptance/rest/change/AbstractSubmit.java b/javatests/com/google/gerrit/acceptance/rest/change/AbstractSubmit.java
index 8b755e9..bab4c1d 100644
--- a/javatests/com/google/gerrit/acceptance/rest/change/AbstractSubmit.java
+++ b/javatests/com/google/gerrit/acceptance/rest/change/AbstractSubmit.java
@@ -38,8 +38,6 @@
 import com.google.gerrit.acceptance.TestAccount;
 import com.google.gerrit.acceptance.TestProjectInput;
 import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
-import com.google.gerrit.acceptance.testsuite.project.TestProjectCreation;
-import com.google.gerrit.common.Nullable;
 import com.google.gerrit.common.data.Permission;
 import com.google.gerrit.extensions.api.changes.ChangeApi;
 import com.google.gerrit.extensions.api.changes.SubmitInput;
@@ -67,7 +65,6 @@
 import com.google.gerrit.reviewdb.client.PatchSet;
 import com.google.gerrit.reviewdb.client.PatchSetApproval;
 import com.google.gerrit.reviewdb.client.Project;
-import com.google.gerrit.reviewdb.client.Project.NameKey;
 import com.google.gerrit.reviewdb.client.RefNames;
 import com.google.gerrit.server.ApprovalsUtil;
 import com.google.gerrit.server.IdentifiedUser;
@@ -389,9 +386,9 @@
     String topic = "test-topic";
 
     // Create test projects
-    Project.NameKey keyA = createProjectForPush(null, getSubmitType());
+    Project.NameKey keyA = createProjectForPush(getSubmitType());
     TestRepository<?> repoA = cloneProject(keyA);
-    Project.NameKey keyB = createProjectForPush(null, getSubmitType());
+    Project.NameKey keyB = createProjectForPush(getSubmitType());
     TestRepository<?> repoB = cloneProject(keyB);
 
     // Create changes on project-a
@@ -425,7 +422,7 @@
     String topic = "test-topic";
 
     // Create test project
-    Project.NameKey keyA = createProjectForPush(null, getSubmitType());
+    Project.NameKey keyA = createProjectForPush(getSubmitType());
     TestRepository<?> repoA = cloneProject(keyA);
 
     RevCommit initialHead = getRemoteHead(keyA, "master");
@@ -775,9 +772,9 @@
     String topic = "test-topic";
 
     // Create test projects
-    Project.NameKey keyA = createProjectForPush(null, getSubmitType());
+    Project.NameKey keyA = createProjectForPush(getSubmitType());
     TestRepository<?> repoA = cloneProject(keyA);
-    Project.NameKey keyB = createProjectForPush(null, getSubmitType());
+    Project.NameKey keyB = createProjectForPush(getSubmitType());
     TestRepository<?> repoB = cloneProject(keyB);
 
     // Create changes on project-a
@@ -940,8 +937,8 @@
 
     String topic = "test-topic";
 
-    Project.NameKey keyA = createProjectForPush(null, getSubmitType());
-    Project.NameKey keyB = createProjectForPush(null, getSubmitType());
+    Project.NameKey keyA = createProjectForPush(getSubmitType());
+    Project.NameKey keyB = createProjectForPush(getSubmitType());
     TestRepository<?> repoA = cloneProject(keyA);
     TestRepository<?> repoB = cloneProject(keyB);
 
@@ -1362,13 +1359,8 @@
   }
 
   // TODO(hanwen): the submodule tests have a similar method; maybe we could share code?
-  protected Project.NameKey createProjectForPush(@Nullable NameKey parent, SubmitType submitType)
-      throws Exception {
-    TestProjectCreation.Builder b = projectOperations.newProject().submitType(submitType);
-    if (parent != null) {
-      b.parent(parent);
-    }
-    Project.NameKey project = b.create();
+  protected Project.NameKey createProjectForPush(SubmitType submitType) throws Exception {
+    Project.NameKey project = projectOperations.newProject().submitType(submitType).create();
     grant(project, "refs/heads/*", Permission.PUSH);
     grant(project, "refs/for/refs/heads/*", Permission.SUBMIT);
     return project;
diff --git a/javatests/com/google/gerrit/acceptance/rest/change/ChangeOwnerIT.java b/javatests/com/google/gerrit/acceptance/rest/change/ChangeOwnerIT.java
index ac0d0aa..164fe60 100644
--- a/javatests/com/google/gerrit/acceptance/rest/change/ChangeOwnerIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/change/ChangeOwnerIT.java
@@ -19,11 +19,13 @@
 import com.google.gerrit.acceptance.PushOneCommit;
 import com.google.gerrit.acceptance.TestAccount;
 import com.google.gerrit.acceptance.TestProjectInput;
+import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
 import com.google.gerrit.extensions.api.changes.ReviewInput;
 import com.google.gerrit.extensions.restapi.AuthException;
 import com.google.gerrit.reviewdb.client.AccountGroup;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.server.group.SystemGroupBackend;
+import com.google.inject.Inject;
 import org.eclipse.jgit.internal.storage.dfs.InMemoryRepository;
 import org.eclipse.jgit.junit.TestRepository;
 import org.junit.Before;
@@ -32,6 +34,7 @@
 public class ChangeOwnerIT extends AbstractDaemonTest {
 
   private TestAccount user2;
+  @Inject private ProjectOperations projectOperations;
 
   @Before
   public void setUp() throws Exception {
@@ -63,7 +66,7 @@
   public void testChangeOwner_OwnerACLGrantedOnParentProject() throws Exception {
     setApiUser(admin);
     grantApproveToChangeOwner(project);
-    Project.NameKey child = createProject("child", project);
+    Project.NameKey child = projectOperations.newProject().parent(project).create();
 
     setApiUser(user);
     TestRepository<InMemoryRepository> childRepo = cloneProject(child, user);
@@ -74,7 +77,7 @@
   public void testChangeOwner_BlockedOnParentProject() throws Exception {
     setApiUser(admin);
     blockApproveForChangeOwner(project);
-    Project.NameKey child = createProject("child", project);
+    Project.NameKey child = projectOperations.newProject().parent(project).create();
 
     setApiUser(user);
     grantApproveToAll(child);
@@ -92,7 +95,7 @@
   public void testChangeOwner_BlockedOnParentProjectAndExclusiveAllowOnChild() throws Exception {
     setApiUser(admin);
     blockApproveForChangeOwner(project);
-    Project.NameKey child = createProject("child", project);
+    Project.NameKey child = projectOperations.newProject().parent(project).create();
 
     setApiUser(user);
     grantExclusiveApproveToAll(child);
diff --git a/javatests/com/google/gerrit/acceptance/rest/change/ChangeReviewersByEmailIT.java b/javatests/com/google/gerrit/acceptance/rest/change/ChangeReviewersByEmailIT.java
index 257c88b..dc71c1f 100644
--- a/javatests/com/google/gerrit/acceptance/rest/change/ChangeReviewersByEmailIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/change/ChangeReviewersByEmailIT.java
@@ -22,8 +22,8 @@
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Iterables;
 import com.google.gerrit.acceptance.AbstractDaemonTest;
-import com.google.gerrit.acceptance.NoHttpd;
 import com.google.gerrit.acceptance.PushOneCommit;
+import com.google.gerrit.acceptance.RestResponse;
 import com.google.gerrit.extensions.api.changes.AddReviewerInput;
 import com.google.gerrit.extensions.api.changes.AddReviewerResult;
 import com.google.gerrit.extensions.api.changes.ReviewInput;
@@ -35,11 +35,12 @@
 import com.google.gerrit.extensions.common.ChangeInfo;
 import com.google.gerrit.mail.Address;
 import com.google.gerrit.testing.FakeEmailSender.Message;
+import com.google.gson.reflect.TypeToken;
+import java.lang.reflect.Type;
 import java.util.List;
 import org.junit.Before;
 import org.junit.Test;
 
-@NoHttpd
 public class ChangeReviewersByEmailIT extends AbstractDaemonTest {
 
   @Before
@@ -96,6 +97,34 @@
   }
 
   @Test
+  public void listReviewersByEmail() throws Exception {
+    assume().that(notesMigration.readChanges()).isTrue();
+    AccountInfo acc = new AccountInfo("Foo Bar", "foo.bar@gerritcodereview.com");
+
+    for (ReviewerState state : ImmutableList.of(ReviewerState.CC, ReviewerState.REVIEWER)) {
+      PushOneCommit.Result r = createChange();
+
+      AddReviewerInput input = new AddReviewerInput();
+      input.reviewer = toRfcAddressString(acc);
+      input.state = state;
+      gApi.changes().id(r.getChangeId()).addReviewer(input);
+
+      RestResponse restResponse =
+          adminRestSession.get("/changes/" + r.getChangeId() + "/reviewers/");
+      restResponse.assertOK();
+      Type type = new TypeToken<List<ReviewerInfo>>() {}.getType();
+      List<ReviewerInfo> reviewers = newGson().fromJson(restResponse.getReader(), type);
+      restResponse.consume();
+
+      assertThat(reviewers).hasSize(1);
+      ReviewerInfo reviewerInfo = Iterables.getOnlyElement(reviewers);
+      assertThat(reviewerInfo._accountId).isNull();
+      assertThat(reviewerInfo.name).isEqualTo(acc.name);
+      assertThat(reviewerInfo.email).isEqualTo(acc.email);
+    }
+  }
+
+  @Test
   public void removeByEmail() throws Exception {
     assume().that(notesMigration.readChanges()).isTrue();
     AccountInfo acc = new AccountInfo("Foo Bar", "foo.bar@gerritcodereview.com");
diff --git a/javatests/com/google/gerrit/acceptance/rest/change/ConfigChangeIT.java b/javatests/com/google/gerrit/acceptance/rest/change/ConfigChangeIT.java
index 22c19ac..c5ba5e4 100644
--- a/javatests/com/google/gerrit/acceptance/rest/change/ConfigChangeIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/change/ConfigChangeIT.java
@@ -22,7 +22,6 @@
 import com.google.gerrit.acceptance.GitUtil;
 import com.google.gerrit.acceptance.PushOneCommit;
 import com.google.gerrit.acceptance.TestProjectInput;
-import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
 import com.google.gerrit.common.data.Permission;
 import com.google.gerrit.extensions.api.changes.ReviewInput;
 import com.google.gerrit.extensions.api.projects.ProjectInput;
@@ -32,7 +31,6 @@
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.client.RefNames;
 import com.google.gerrit.server.project.testing.Util;
-import com.google.inject.Inject;
 import org.eclipse.jgit.internal.storage.dfs.InMemoryRepository;
 import org.eclipse.jgit.junit.TestRepository;
 import org.eclipse.jgit.lib.Config;
@@ -45,8 +43,6 @@
 import org.junit.Test;
 
 public class ConfigChangeIT extends AbstractDaemonTest {
-  @Inject private ProjectOperations projectOperations;
-
   @Before
   public void setUp() throws Exception {
     try (ProjectConfigUpdate u = updateProject(project)) {
diff --git a/javatests/com/google/gerrit/acceptance/rest/change/PrivateByDefaultIT.java b/javatests/com/google/gerrit/acceptance/rest/change/PrivateByDefaultIT.java
index f91d31a..936feed 100644
--- a/javatests/com/google/gerrit/acceptance/rest/change/PrivateByDefaultIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/change/PrivateByDefaultIT.java
@@ -41,7 +41,7 @@
   @Before
   public void setUp() throws Exception {
     project1 = projectOperations.newProject().create();
-    project2 = createProject("project-2", project1);
+    project2 = projectOperations.newProject().parent(project1).create();
     setPrivateByDefault(project1, InheritableBoolean.FALSE);
   }
 
diff --git a/javatests/com/google/gerrit/acceptance/rest/change/SubmitByMergeIfNecessaryIT.java b/javatests/com/google/gerrit/acceptance/rest/change/SubmitByMergeIfNecessaryIT.java
index 13e7642e..d92cf30 100644
--- a/javatests/com/google/gerrit/acceptance/rest/change/SubmitByMergeIfNecessaryIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/change/SubmitByMergeIfNecessaryIT.java
@@ -135,9 +135,9 @@
 
   @Test
   public void submitChangesAcrossRepos() throws Exception {
-    Project.NameKey p1 = this.projectOperations.newProject().create();
-    Project.NameKey p2 = this.projectOperations.newProject().create();
-    Project.NameKey p3 = this.projectOperations.newProject().create();
+    Project.NameKey p1 = projectOperations.newProject().create();
+    Project.NameKey p2 = projectOperations.newProject().create();
+    Project.NameKey p3 = projectOperations.newProject().create();
 
     RevCommit initialHead2 = getRemoteHead(p2, "master");
     RevCommit initialHead3 = getRemoteHead(p3, "master");
@@ -212,9 +212,9 @@
 
   @Test
   public void submitChangesAcrossReposBlocked() throws Exception {
-    Project.NameKey p1 = this.projectOperations.newProject().create();
-    Project.NameKey p2 = this.projectOperations.newProject().create();
-    Project.NameKey p3 = this.projectOperations.newProject().create();
+    Project.NameKey p1 = projectOperations.newProject().create();
+    Project.NameKey p2 = projectOperations.newProject().create();
+    Project.NameKey p3 = projectOperations.newProject().create();
 
     TestRepository<?> repo1 = cloneProject(p1);
     TestRepository<?> repo2 = cloneProject(p2);
@@ -391,7 +391,7 @@
             "3",
             "a-topic-here");
 
-    Project.NameKey p3 = this.projectOperations.newProject().create();
+    Project.NameKey p3 = projectOperations.newProject().create();
     TestRepository<?> repo3 = cloneProject(p3);
     RevCommit repo3Head = getRemoteHead(p3, "master");
     PushOneCommit.Result change3b =
@@ -713,8 +713,8 @@
     //                    (c2a) <= private
     assume().that(isSubmitWholeTopicEnabled()).isTrue();
 
-    Project.NameKey p1 = this.projectOperations.newProject().create();
-    Project.NameKey p2 = this.projectOperations.newProject().create();
+    Project.NameKey p1 = projectOperations.newProject().create();
+    Project.NameKey p2 = projectOperations.newProject().create();
 
     grantLabel("Code-Review", -2, 2, p1, "refs/heads/*", false, REGISTERED_USERS, false);
     grant(p1, "refs/*", Permission.SUBMIT, false, REGISTERED_USERS);
@@ -767,7 +767,7 @@
 
   @Test
   public void testPreviewSubmitTgz() throws Exception {
-    Project.NameKey p1 = this.projectOperations.newProject().create();
+    Project.NameKey p1 = projectOperations.newProject().create();
 
     TestRepository<?> repo1 = cloneProject(p1);
     PushOneCommit.Result change1 = createChange(repo1, "master", "test", "a.txt", "1", "topic");
diff --git a/javatests/com/google/gerrit/acceptance/rest/project/GetChildProjectIT.java b/javatests/com/google/gerrit/acceptance/rest/project/GetChildProjectIT.java
index b7ee3f7..d736578 100644
--- a/javatests/com/google/gerrit/acceptance/rest/project/GetChildProjectIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/project/GetChildProjectIT.java
@@ -53,7 +53,7 @@
   @Test
   public void getGrandChildProject_NotFound() throws Exception {
     Project.NameKey child = projectOperations.newProject().create();
-    Project.NameKey grandChild = createProject("p1.1", child);
+    Project.NameKey grandChild = projectOperations.newProject().parent(child).create();
 
     assertChildNotFound(allProjects, grandChild.get());
   }
@@ -61,7 +61,7 @@
   @Test
   public void getGrandChildProjectWithRecursiveFlag() throws Exception {
     Project.NameKey child = projectOperations.newProject().create();
-    Project.NameKey grandChild = createProject("p1.1", child);
+    Project.NameKey grandChild = projectOperations.newProject().parent(child).create();
 
     ProjectInfo grandChildInfo =
         gApi.projects().name(allProjects.get()).child(grandChild.get()).get(true);
diff --git a/javatests/com/google/gerrit/acceptance/rest/project/ListChildProjectsIT.java b/javatests/com/google/gerrit/acceptance/rest/project/ListChildProjectsIT.java
index 7089c43..a0bc450 100644
--- a/javatests/com/google/gerrit/acceptance/rest/project/ListChildProjectsIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/project/ListChildProjectsIT.java
@@ -44,8 +44,8 @@
   @Test
   public void listChildren() throws Exception {
     Project.NameKey child1 = projectOperations.newProject().create();
-    Project.NameKey child1_1 = createProject("p1.1", child1);
-    Project.NameKey child1_2 = createProject("p1.2", child1);
+    Project.NameKey child1_1 = projectOperations.newProject().parent(child1).create();
+    Project.NameKey child1_2 = projectOperations.newProject().parent(child1).create();
 
     assertThatNameList(gApi.projects().name(child1.get()).children()).isOrdered();
     assertThatNameList(gApi.projects().name(child1.get()).children())
diff --git a/javatests/com/google/gerrit/acceptance/rest/project/ListProjectsIT.java b/javatests/com/google/gerrit/acceptance/rest/project/ListProjectsIT.java
index 1d47408..7009e76 100644
--- a/javatests/com/google/gerrit/acceptance/rest/project/ListProjectsIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/project/ListProjectsIT.java
@@ -46,7 +46,7 @@
 
   @Test
   public void listProjects() throws Exception {
-    Project.NameKey someProject = this.projectOperations.newProject().create();
+    Project.NameKey someProject = projectOperations.newProject().create();
     assertThatNameList(gApi.projects().list().get())
         .containsExactly(allProjects, allUsers, project, someProject);
     assertThatNameList(gApi.projects().list().get()).isOrdered();
@@ -104,7 +104,6 @@
 
   @Test
   public void listProjectsWithPrefix() throws Exception {
-    // Default for createEmptyCommit should match TestProjectConfig.
     Project.NameKey someProject = projectOperations.newProject().name("listtest-p1").create();
     Project.NameKey someOtherProject = projectOperations.newProject().name("listtest-p2").create();
     projectOperations.newProject().name("other-prefix-project").create();
@@ -171,10 +170,8 @@
 
   @Test
   public void listProjectsWithTree() throws Exception {
-    // Default for createEmptyCommit should match TestProjectConfig.
     Project.NameKey someParentProject =
         projectOperations.newProject().name("some-parent-project").create();
-    // Default for createEmptyCommit should match TestProjectConfig.
     Project.NameKey someChildProject =
         projectOperations
             .newProject()
@@ -199,8 +196,8 @@
 
   @Test
   public void listWithHiddenAndReadonlyProjects() throws Exception {
-    Project.NameKey hidden = this.projectOperations.newProject().create();
-    Project.NameKey readonly = this.projectOperations.newProject().create();
+    Project.NameKey hidden = projectOperations.newProject().create();
+    Project.NameKey readonly = projectOperations.newProject().create();
 
     // Set project read-only
     ConfigInput input = new ConfigInput();
diff --git a/javatests/com/google/gerrit/acceptance/rest/project/ProjectLevelConfigIT.java b/javatests/com/google/gerrit/acceptance/rest/project/ProjectLevelConfigIT.java
index c78b47b..3e51260 100644
--- a/javatests/com/google/gerrit/acceptance/rest/project/ProjectLevelConfigIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/project/ProjectLevelConfigIT.java
@@ -19,9 +19,11 @@
 
 import com.google.gerrit.acceptance.AbstractDaemonTest;
 import com.google.gerrit.acceptance.PushOneCommit;
+import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.client.RefNames;
 import com.google.gerrit.server.project.ProjectState;
+import com.google.inject.Inject;
 import java.util.Arrays;
 import org.eclipse.jgit.junit.TestRepository;
 import org.eclipse.jgit.lib.Config;
@@ -29,6 +31,8 @@
 import org.junit.Test;
 
 public class ProjectLevelConfigIT extends AbstractDaemonTest {
+  @Inject private ProjectOperations projectOperations;
+
   @Before
   public void setUp() throws Exception {
     fetch(testRepo, RefNames.REFS_CONFIG + ":refs/heads/config");
@@ -82,7 +86,7 @@
         .to(RefNames.REFS_CONFIG)
         .assertOkStatus();
 
-    Project.NameKey childProject = createProject("child", project);
+    Project.NameKey childProject = projectOperations.newProject().parent(project).create();
     TestRepository<?> childTestRepo = cloneProject(childProject);
     fetch(childTestRepo, RefNames.REFS_CONFIG + ":refs/heads/config");
     childTestRepo.reset("refs/heads/config");
@@ -137,7 +141,7 @@
         .to(RefNames.REFS_CONFIG)
         .assertOkStatus();
 
-    Project.NameKey childProject = createProject("child", project);
+    Project.NameKey childProject = projectOperations.newProject().parent(project).create();
     TestRepository<?> childTestRepo = cloneProject(childProject);
     fetch(childTestRepo, RefNames.REFS_CONFIG + ":refs/heads/config");
     childTestRepo.reset("refs/heads/config");
diff --git a/javatests/com/google/gerrit/acceptance/server/permissions/PermissionBackendConditionIT.java b/javatests/com/google/gerrit/acceptance/server/permissions/PermissionBackendConditionIT.java
index 2028a68..a72cd33 100644
--- a/javatests/com/google/gerrit/acceptance/server/permissions/PermissionBackendConditionIT.java
+++ b/javatests/com/google/gerrit/acceptance/server/permissions/PermissionBackendConditionIT.java
@@ -154,8 +154,7 @@
   @Test
   public void refPermissions_differentResourceAndSameUserDoesNotEqual2() throws Exception {
     Branch.NameKey branch1 = new Branch.NameKey(project, "branch");
-    Branch.NameKey branch2 =
-        new Branch.NameKey(this.projectOperations.newProject().create(), "branch");
+    Branch.NameKey branch2 = new Branch.NameKey(projectOperations.newProject().create(), "branch");
     BooleanCondition cond1 = pb.user(user()).ref(branch1).testCond(RefPermission.READ);
     BooleanCondition cond2 = pb.user(user()).ref(branch2).testCond(RefPermission.READ);
 
diff --git a/javatests/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java b/javatests/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java
index 1e60071..4e88955 100644
--- a/javatests/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java
+++ b/javatests/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java
@@ -25,11 +25,6 @@
 public class ElasticIndexIT extends AbstractIndexTests {
 
   @ConfigSuite.Default
-  public static Config elasticsearchV2() {
-    return getConfig(ElasticVersion.V2_4);
-  }
-
-  @ConfigSuite.Config
   public static Config elasticsearchV5() {
     return getConfig(ElasticVersion.V5_6);
   }
@@ -39,6 +34,11 @@
     return getConfig(ElasticVersion.V6_5);
   }
 
+  @ConfigSuite.Config
+  public static Config elasticsearchV7() {
+    return getConfig(ElasticVersion.V7_0);
+  }
+
   @Override
   public void configureIndex(Injector injector) throws Exception {
     createAllIndexes(injector);
diff --git a/javatests/com/google/gerrit/common/BUILD b/javatests/com/google/gerrit/common/BUILD
index 88ddcd5..29a23c3 100644
--- a/javatests/com/google/gerrit/common/BUILD
+++ b/javatests/com/google/gerrit/common/BUILD
@@ -2,10 +2,7 @@
 
 junit_tests(
     name = "server_tests",
-    srcs = [
-        "AutoValueTest.java",
-        "VersionTest.java",
-    ],
+    srcs = glob(["*.java"]),
     tags = ["no_windows"],
     deps = [
         "//java/com/google/gerrit/common:server",
diff --git a/javatests/com/google/gerrit/common/data/AccessSectionTest.java b/javatests/com/google/gerrit/common/data/AccessSectionTest.java
index b12a9c2..faf9d6c 100644
--- a/javatests/com/google/gerrit/common/data/AccessSectionTest.java
+++ b/javatests/com/google/gerrit/common/data/AccessSectionTest.java
@@ -152,21 +152,6 @@
   }
 
   @Test
-  public void cannotAddPermissionByModifyingListThatWasRetrievedFromAccessSection() {
-    Permission submitPermission = new Permission(Permission.SUBMIT);
-    accessSection.getPermissions().add(submitPermission);
-    assertThat(accessSection.getPermission(Permission.SUBMIT)).isNull();
-
-    List<Permission> permissions = new ArrayList<>();
-    permissions.add(new Permission(Permission.ABANDON));
-    permissions.add(new Permission(Permission.REBASE));
-    accessSection.setPermissions(permissions);
-    assertThat(accessSection.getPermission(Permission.SUBMIT)).isNull();
-    accessSection.getPermissions().add(submitPermission);
-    assertThat(accessSection.getPermission(Permission.SUBMIT)).isNull();
-  }
-
-  @Test
   public void removePermission() {
     Permission abandonPermission = new Permission(Permission.ABANDON);
     Permission rebasePermission = new Permission(Permission.REBASE);
diff --git a/javatests/com/google/gerrit/common/data/BUILD b/javatests/com/google/gerrit/common/data/BUILD
new file mode 100644
index 0000000..776a5e0
--- /dev/null
+++ b/javatests/com/google/gerrit/common/data/BUILD
@@ -0,0 +1,13 @@
+load("//tools/bzl:junit.bzl", "junit_tests")
+
+junit_tests(
+    name = "data_tests",
+    srcs = glob(["*.java"]),
+    deps = [
+        "//java/com/google/gerrit/common:server",
+        "//java/com/google/gerrit/reviewdb:server",
+        "//java/com/google/gerrit/testing:gerrit-test-util",
+        "//lib:guava",
+        "//lib/truth",
+    ],
+)
diff --git a/javatests/com/google/gerrit/common/data/PermissionTest.java b/javatests/com/google/gerrit/common/data/PermissionTest.java
index 84fb2f0..23380e7 100644
--- a/javatests/com/google/gerrit/common/data/PermissionTest.java
+++ b/javatests/com/google/gerrit/common/data/PermissionTest.java
@@ -187,22 +187,6 @@
   }
 
   @Test
-  public void cannotAddPermissionByModifyingListThatWasRetrievedFromAccessSection() {
-    GroupReference groupReference1 = new GroupReference(new AccountGroup.UUID("uuid-1"), "group1");
-    PermissionRule permissionRule1 = new PermissionRule(groupReference1);
-    permission.getRules().add(permissionRule1);
-    assertThat(permission.getRule(groupReference1)).isNull();
-
-    List<PermissionRule> rules = new ArrayList<>();
-    rules.add(new PermissionRule(new GroupReference(new AccountGroup.UUID("uuid-2"), "group2")));
-    rules.add(new PermissionRule(new GroupReference(new AccountGroup.UUID("uuid-3"), "group3")));
-    permission.setRules(rules);
-    assertThat(permission.getRule(groupReference1)).isNull();
-    permission.getRules().add(permissionRule1);
-    assertThat(permission.getRule(groupReference1)).isNull();
-  }
-
-  @Test
   public void getNonExistingRule() {
     GroupReference groupReference = new GroupReference(new AccountGroup.UUID("uuid-1"), "group1");
     assertThat(permission.getRule(groupReference)).isNull();
diff --git a/javatests/com/google/gerrit/elasticsearch/BUILD b/javatests/com/google/gerrit/elasticsearch/BUILD
index 51d45f2..20ef2fa 100644
--- a/javatests/com/google/gerrit/elasticsearch/BUILD
+++ b/javatests/com/google/gerrit/elasticsearch/BUILD
@@ -40,12 +40,12 @@
 
 SUFFIX = "sTest.java"
 
-ELASTICSEARCH_TESTS = {i: "ElasticQuery" + i.capitalize() + SUFFIX for i in TYPES}
-
 ELASTICSEARCH_TESTS_V5 = {i: "ElasticV5Query" + i.capitalize() + SUFFIX for i in TYPES}
 
 ELASTICSEARCH_TESTS_V6 = {i: "ElasticV6Query" + i.capitalize() + SUFFIX for i in TYPES}
 
+ELASTICSEARCH_TESTS_V7 = {i: "ElasticV7Query" + i.capitalize() + SUFFIX for i in TYPES}
+
 ELASTICSEARCH_TAGS = [
     "docker",
     "elastic",
@@ -53,14 +53,6 @@
 ]
 
 [junit_tests(
-    name = "elasticsearch_query_%ss_test" % name,
-    size = "large",
-    srcs = [src],
-    tags = ELASTICSEARCH_TAGS,
-    deps = ELASTICSEARCH_DEPS + [QUERY_TESTS_DEP % name],
-) for name, src in ELASTICSEARCH_TESTS.items()]
-
-[junit_tests(
     name = "elasticsearch_query_%ss_test_V5" % name,
     size = "large",
     srcs = [src],
@@ -76,6 +68,14 @@
     deps = ELASTICSEARCH_DEPS + [QUERY_TESTS_DEP % name],
 ) for name, src in ELASTICSEARCH_TESTS_V6.items()]
 
+[junit_tests(
+    name = "elasticsearch_query_%ss_test_V7" % name,
+    size = "large",
+    srcs = [src],
+    tags = ELASTICSEARCH_TAGS + ["flaky"],
+    deps = ELASTICSEARCH_DEPS + [QUERY_TESTS_DEP % name],
+) for name, src in ELASTICSEARCH_TESTS_V7.items()]
+
 junit_tests(
     name = "elasticsearch_tests",
     size = "small",
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticContainer.java b/javatests/com/google/gerrit/elasticsearch/ElasticContainer.java
index c3150f1..79e2853 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticContainer.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticContainer.java
@@ -36,14 +36,8 @@
     }
   }
 
-  public static ElasticContainer<?> createAndStart() {
-    return createAndStart(ElasticVersion.V2_4);
-  }
-
   private static String getImageName(ElasticVersion version) {
     switch (version) {
-      case V2_4:
-        return "elasticsearch:2.4.6-alpine";
       case V5_6:
         return "docker.elastic.co/elasticsearch/elasticsearch:5.6.13";
       case V6_2:
@@ -53,7 +47,9 @@
       case V6_4:
         return "docker.elastic.co/elasticsearch/elasticsearch-oss:6.4.3";
       case V6_5:
-        return "docker.elastic.co/elasticsearch/elasticsearch-oss:6.5.0";
+        return "docker.elastic.co/elasticsearch/elasticsearch-oss:6.5.1";
+      case V7_0:
+        return "docker.elastic.co/elasticsearch/elasticsearch-oss:7.0.0-alpha1";
     }
     throw new IllegalStateException("No tests for version: " + version.name());
   }
@@ -65,9 +61,6 @@
   @Override
   protected void configure() {
     addExposedPort(ELASTICSEARCH_DEFAULT_PORT);
-
-    // https://github.com/docker-library/elasticsearch/issues/58
-    addEnv("-Ees.network.host", "0.0.0.0");
   }
 
   @Override
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryAccountsTest.java b/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryAccountsTest.java
index 5d2f944..074debc 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryAccountsTest.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryAccountsTest.java
@@ -52,10 +52,6 @@
     }
   }
 
-  private String testName() {
-    return testName.getMethodName().toLowerCase() + "_";
-  }
-
   @Override
   protected void initAfterLifecycleStart() throws Exception {
     super.initAfterLifecycleStart();
@@ -66,7 +62,7 @@
   protected Injector createInjector() {
     Config elasticsearchConfig = new Config(config);
     InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = testName();
+    String indicesPrefix = getSanitizedMethodName();
     ElasticTestUtils.configure(
         elasticsearchConfig, nodeInfo.port, indicesPrefix, ElasticVersion.V5_6);
     return Guice.createInjector(new InMemoryModule(elasticsearchConfig, notesMigration));
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryChangesTest.java b/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryChangesTest.java
index 5d76162..89d0168 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryChangesTest.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryChangesTest.java
@@ -52,10 +52,6 @@
     }
   }
 
-  private String testName() {
-    return testName.getMethodName().toLowerCase() + "_";
-  }
-
   @Override
   protected void initAfterLifecycleStart() throws Exception {
     super.initAfterLifecycleStart();
@@ -66,7 +62,7 @@
   protected Injector createInjector() {
     Config elasticsearchConfig = new Config(config);
     InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = testName();
+    String indicesPrefix = getSanitizedMethodName();
     ElasticTestUtils.configure(
         elasticsearchConfig, nodeInfo.port, indicesPrefix, ElasticVersion.V5_6);
     return Guice.createInjector(new InMemoryModule(elasticsearchConfig, notesMigration));
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryGroupsTest.java b/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryGroupsTest.java
index 9ce2e93..79d3ca5 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryGroupsTest.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryGroupsTest.java
@@ -52,10 +52,6 @@
     }
   }
 
-  private String testName() {
-    return testName.getMethodName().toLowerCase() + "_";
-  }
-
   @Override
   protected void initAfterLifecycleStart() throws Exception {
     super.initAfterLifecycleStart();
@@ -66,7 +62,7 @@
   protected Injector createInjector() {
     Config elasticsearchConfig = new Config(config);
     InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = testName();
+    String indicesPrefix = getSanitizedMethodName();
     ElasticTestUtils.configure(
         elasticsearchConfig, nodeInfo.port, indicesPrefix, ElasticVersion.V5_6);
     return Guice.createInjector(new InMemoryModule(elasticsearchConfig, notesMigration));
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryProjectsTest.java b/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryProjectsTest.java
index 4184935..247cb29 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryProjectsTest.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryProjectsTest.java
@@ -52,10 +52,6 @@
     }
   }
 
-  private String testName() {
-    return testName.getMethodName().toLowerCase() + "_";
-  }
-
   @Override
   protected void initAfterLifecycleStart() throws Exception {
     super.initAfterLifecycleStart();
@@ -66,7 +62,7 @@
   protected Injector createInjector() {
     Config elasticsearchConfig = new Config(config);
     InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = testName();
+    String indicesPrefix = getSanitizedMethodName();
     ElasticTestUtils.configure(
         elasticsearchConfig, nodeInfo.port, indicesPrefix, ElasticVersion.V5_6);
     return Guice.createInjector(new InMemoryModule(elasticsearchConfig, notesMigration));
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryAccountsTest.java b/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryAccountsTest.java
index eeb4c09..519a9c3 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryAccountsTest.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryAccountsTest.java
@@ -52,10 +52,6 @@
     }
   }
 
-  private String testName() {
-    return testName.getMethodName().toLowerCase() + "_";
-  }
-
   @Override
   protected void initAfterLifecycleStart() throws Exception {
     super.initAfterLifecycleStart();
@@ -66,7 +62,7 @@
   protected Injector createInjector() {
     Config elasticsearchConfig = new Config(config);
     InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = testName();
+    String indicesPrefix = getSanitizedMethodName();
     ElasticTestUtils.configure(elasticsearchConfig, nodeInfo.port, indicesPrefix);
     return Guice.createInjector(new InMemoryModule(elasticsearchConfig, notesMigration));
   }
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryChangesTest.java b/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryChangesTest.java
index 7525b65..690734c 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryChangesTest.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryChangesTest.java
@@ -52,10 +52,6 @@
     }
   }
 
-  private String testName() {
-    return testName.getMethodName().toLowerCase() + "_";
-  }
-
   @Override
   protected void initAfterLifecycleStart() throws Exception {
     super.initAfterLifecycleStart();
@@ -66,7 +62,7 @@
   protected Injector createInjector() {
     Config elasticsearchConfig = new Config(config);
     InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = testName();
+    String indicesPrefix = getSanitizedMethodName();
     ElasticTestUtils.configure(elasticsearchConfig, nodeInfo.port, indicesPrefix);
     return Guice.createInjector(new InMemoryModule(elasticsearchConfig, notesMigration));
   }
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryGroupsTest.java b/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryGroupsTest.java
index e8d5683..bf0095a 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryGroupsTest.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryGroupsTest.java
@@ -52,10 +52,6 @@
     }
   }
 
-  private String testName() {
-    return testName.getMethodName().toLowerCase() + "_";
-  }
-
   @Override
   protected void initAfterLifecycleStart() throws Exception {
     super.initAfterLifecycleStart();
@@ -66,7 +62,7 @@
   protected Injector createInjector() {
     Config elasticsearchConfig = new Config(config);
     InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = testName();
+    String indicesPrefix = getSanitizedMethodName();
     ElasticTestUtils.configure(elasticsearchConfig, nodeInfo.port, indicesPrefix);
     return Guice.createInjector(new InMemoryModule(elasticsearchConfig, notesMigration));
   }
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryProjectsTest.java b/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryProjectsTest.java
index eaaf0c8..f2227a9 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryProjectsTest.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticV6QueryProjectsTest.java
@@ -52,10 +52,6 @@
     }
   }
 
-  private String testName() {
-    return testName.getMethodName().toLowerCase() + "_";
-  }
-
   @Override
   protected void initAfterLifecycleStart() throws Exception {
     super.initAfterLifecycleStart();
@@ -66,7 +62,7 @@
   protected Injector createInjector() {
     Config elasticsearchConfig = new Config(config);
     InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = testName();
+    String indicesPrefix = getSanitizedMethodName();
     ElasticTestUtils.configure(elasticsearchConfig, nodeInfo.port, indicesPrefix);
     return Guice.createInjector(new InMemoryModule(elasticsearchConfig, notesMigration));
   }
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticQueryAccountsTest.java b/javatests/com/google/gerrit/elasticsearch/ElasticV7QueryAccountsTest.java
similarity index 87%
rename from javatests/com/google/gerrit/elasticsearch/ElasticQueryAccountsTest.java
rename to javatests/com/google/gerrit/elasticsearch/ElasticV7QueryAccountsTest.java
index 4f0f8b0..7ac9f21 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticQueryAccountsTest.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticV7QueryAccountsTest.java
@@ -1,4 +1,4 @@
-// Copyright (C) 2016 The Android Open Source Project
+// Copyright (C) 2018 The Android Open Source Project
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -25,7 +25,7 @@
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
 
-public class ElasticQueryAccountsTest extends AbstractQueryAccountsTest {
+public class ElasticV7QueryAccountsTest extends AbstractQueryAccountsTest {
   @ConfigSuite.Default
   public static Config defaultConfig() {
     return IndexConfig.createForElasticsearch();
@@ -41,7 +41,7 @@
       return;
     }
 
-    container = ElasticContainer.createAndStart();
+    container = ElasticContainer.createAndStart(ElasticVersion.V7_0);
     nodeInfo = new ElasticNodeInfo(container.getHttpHost().getPort());
   }
 
@@ -52,10 +52,6 @@
     }
   }
 
-  private String testName() {
-    return testName.getMethodName().toLowerCase() + "_";
-  }
-
   @Override
   protected void initAfterLifecycleStart() throws Exception {
     super.initAfterLifecycleStart();
@@ -66,7 +62,7 @@
   protected Injector createInjector() {
     Config elasticsearchConfig = new Config(config);
     InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = testName();
+    String indicesPrefix = getSanitizedMethodName();
     ElasticTestUtils.configure(elasticsearchConfig, nodeInfo.port, indicesPrefix);
     return Guice.createInjector(new InMemoryModule(elasticsearchConfig, notesMigration));
   }
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticQueryChangesTest.java b/javatests/com/google/gerrit/elasticsearch/ElasticV7QueryChangesTest.java
similarity index 87%
rename from javatests/com/google/gerrit/elasticsearch/ElasticQueryChangesTest.java
rename to javatests/com/google/gerrit/elasticsearch/ElasticV7QueryChangesTest.java
index a02d691..ed6f95b 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticQueryChangesTest.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticV7QueryChangesTest.java
@@ -1,4 +1,4 @@
-// Copyright (C) 2014 The Android Open Source Project
+// Copyright (C) 2018 The Android Open Source Project
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -25,7 +25,7 @@
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
 
-public class ElasticQueryChangesTest extends AbstractQueryChangesTest {
+public class ElasticV7QueryChangesTest extends AbstractQueryChangesTest {
   @ConfigSuite.Default
   public static Config defaultConfig() {
     return IndexConfig.createForElasticsearch();
@@ -41,7 +41,7 @@
       return;
     }
 
-    container = ElasticContainer.createAndStart();
+    container = ElasticContainer.createAndStart(ElasticVersion.V7_0);
     nodeInfo = new ElasticNodeInfo(container.getHttpHost().getPort());
   }
 
@@ -52,10 +52,6 @@
     }
   }
 
-  private String testName() {
-    return testName.getMethodName().toLowerCase() + "_";
-  }
-
   @Override
   protected void initAfterLifecycleStart() throws Exception {
     super.initAfterLifecycleStart();
@@ -66,7 +62,7 @@
   protected Injector createInjector() {
     Config elasticsearchConfig = new Config(config);
     InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = testName();
+    String indicesPrefix = getSanitizedMethodName();
     ElasticTestUtils.configure(elasticsearchConfig, nodeInfo.port, indicesPrefix);
     return Guice.createInjector(new InMemoryModule(elasticsearchConfig, notesMigration));
   }
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticQueryGroupsTest.java b/javatests/com/google/gerrit/elasticsearch/ElasticV7QueryGroupsTest.java
similarity index 87%
rename from javatests/com/google/gerrit/elasticsearch/ElasticQueryGroupsTest.java
rename to javatests/com/google/gerrit/elasticsearch/ElasticV7QueryGroupsTest.java
index f13c491..5efaa4a 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticQueryGroupsTest.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticV7QueryGroupsTest.java
@@ -1,4 +1,4 @@
-// Copyright (C) 2017 The Android Open Source Project
+// Copyright (C) 2018 The Android Open Source Project
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -25,7 +25,7 @@
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
 
-public class ElasticQueryGroupsTest extends AbstractQueryGroupsTest {
+public class ElasticV7QueryGroupsTest extends AbstractQueryGroupsTest {
   @ConfigSuite.Default
   public static Config defaultConfig() {
     return IndexConfig.createForElasticsearch();
@@ -41,7 +41,7 @@
       return;
     }
 
-    container = ElasticContainer.createAndStart();
+    container = ElasticContainer.createAndStart(ElasticVersion.V7_0);
     nodeInfo = new ElasticNodeInfo(container.getHttpHost().getPort());
   }
 
@@ -52,10 +52,6 @@
     }
   }
 
-  private String testName() {
-    return testName.getMethodName().toLowerCase() + "_";
-  }
-
   @Override
   protected void initAfterLifecycleStart() throws Exception {
     super.initAfterLifecycleStart();
@@ -66,7 +62,7 @@
   protected Injector createInjector() {
     Config elasticsearchConfig = new Config(config);
     InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = testName();
+    String indicesPrefix = getSanitizedMethodName();
     ElasticTestUtils.configure(elasticsearchConfig, nodeInfo.port, indicesPrefix);
     return Guice.createInjector(new InMemoryModule(elasticsearchConfig, notesMigration));
   }
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticQueryProjectsTest.java b/javatests/com/google/gerrit/elasticsearch/ElasticV7QueryProjectsTest.java
similarity index 87%
rename from javatests/com/google/gerrit/elasticsearch/ElasticQueryProjectsTest.java
rename to javatests/com/google/gerrit/elasticsearch/ElasticV7QueryProjectsTest.java
index dd04010..02b3641 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticQueryProjectsTest.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticV7QueryProjectsTest.java
@@ -1,4 +1,4 @@
-// Copyright (C) 2017 The Android Open Source Project
+// Copyright (C) 2018 The Android Open Source Project
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -25,7 +25,7 @@
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
 
-public class ElasticQueryProjectsTest extends AbstractQueryProjectsTest {
+public class ElasticV7QueryProjectsTest extends AbstractQueryProjectsTest {
   @ConfigSuite.Default
   public static Config defaultConfig() {
     return IndexConfig.createForElasticsearch();
@@ -41,7 +41,7 @@
       return;
     }
 
-    container = ElasticContainer.createAndStart();
+    container = ElasticContainer.createAndStart(ElasticVersion.V7_0);
     nodeInfo = new ElasticNodeInfo(container.getHttpHost().getPort());
   }
 
@@ -52,10 +52,6 @@
     }
   }
 
-  private String testName() {
-    return testName.getMethodName().toLowerCase() + "_";
-  }
-
   @Override
   protected void initAfterLifecycleStart() throws Exception {
     super.initAfterLifecycleStart();
@@ -66,7 +62,7 @@
   protected Injector createInjector() {
     Config elasticsearchConfig = new Config(config);
     InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = testName();
+    String indicesPrefix = getSanitizedMethodName();
     ElasticTestUtils.configure(elasticsearchConfig, nodeInfo.port, indicesPrefix);
     return Guice.createInjector(new InMemoryModule(elasticsearchConfig, notesMigration));
   }
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticVersionTest.java b/javatests/com/google/gerrit/elasticsearch/ElasticVersionTest.java
index 3ab9d5a..baf6c2b 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticVersionTest.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticVersionTest.java
@@ -22,9 +22,6 @@
 public class ElasticVersionTest extends GerritBaseTests {
   @Test
   public void supportedVersion() throws Exception {
-    assertThat(ElasticVersion.forVersion("2.4.0")).isEqualTo(ElasticVersion.V2_4);
-    assertThat(ElasticVersion.forVersion("2.4.6")).isEqualTo(ElasticVersion.V2_4);
-
     assertThat(ElasticVersion.forVersion("5.6.0")).isEqualTo(ElasticVersion.V5_6);
     assertThat(ElasticVersion.forVersion("5.6.11")).isEqualTo(ElasticVersion.V5_6);
 
@@ -36,6 +33,12 @@
 
     assertThat(ElasticVersion.forVersion("6.4.0")).isEqualTo(ElasticVersion.V6_4);
     assertThat(ElasticVersion.forVersion("6.4.1")).isEqualTo(ElasticVersion.V6_4);
+
+    assertThat(ElasticVersion.forVersion("6.5.0")).isEqualTo(ElasticVersion.V6_5);
+    assertThat(ElasticVersion.forVersion("6.5.1")).isEqualTo(ElasticVersion.V6_5);
+
+    assertThat(ElasticVersion.forVersion("7.0.0")).isEqualTo(ElasticVersion.V7_0);
+    assertThat(ElasticVersion.forVersion("7.0.1")).isEqualTo(ElasticVersion.V7_0);
   }
 
   @Test
@@ -48,9 +51,19 @@
 
   @Test
   public void version6() throws Exception {
-    assertThat(ElasticVersion.V6_2.isV6()).isTrue();
-    assertThat(ElasticVersion.V6_3.isV6()).isTrue();
-    assertThat(ElasticVersion.V6_4.isV6()).isTrue();
-    assertThat(ElasticVersion.V5_6.isV6()).isFalse();
+    assertThat(ElasticVersion.V5_6.isV6OrLater()).isFalse();
+    assertThat(ElasticVersion.V6_2.isV6OrLater()).isTrue();
+    assertThat(ElasticVersion.V6_3.isV6OrLater()).isTrue();
+    assertThat(ElasticVersion.V6_4.isV6OrLater()).isTrue();
+    assertThat(ElasticVersion.V7_0.isV6OrLater()).isTrue();
+  }
+
+  @Test
+  public void version7() throws Exception {
+    assertThat(ElasticVersion.V5_6.isV7OrLater()).isFalse();
+    assertThat(ElasticVersion.V6_2.isV7OrLater()).isFalse();
+    assertThat(ElasticVersion.V6_3.isV7OrLater()).isFalse();
+    assertThat(ElasticVersion.V6_4.isV7OrLater()).isFalse();
+    assertThat(ElasticVersion.V7_0.isV7OrLater()).isTrue();
   }
 }
diff --git a/lib/BUILD b/lib/BUILD
index 95ca4db..80da4c0 100644
--- a/lib/BUILD
+++ b/lib/BUILD
@@ -80,6 +80,13 @@
 )
 
 java_library(
+    name = "guava-failureaccess",
+    data = ["//lib:LICENSE-Apache2.0"],
+    visibility = ["//visibility:public"],
+    exports = ["@guava-failureaccess//jar"],
+)
+
+java_library(
     name = "j2objc",
     data = ["//lib:LICENSE-Apache2.0"],
     visibility = ["//visibility:public"],
@@ -91,6 +98,7 @@
     data = ["//lib:LICENSE-Apache2.0"],
     visibility = ["//visibility:public"],
     exports = [
+        ":guava-failureaccess",
         ":j2objc",
         "@guava//jar",
     ],
diff --git a/lib/guava.bzl b/lib/guava.bzl
index 1add718..e4c9083 100644
--- a/lib/guava.bzl
+++ b/lib/guava.bzl
@@ -1,5 +1,5 @@
-GUAVA_VERSION = "26.0-jre"
+GUAVA_VERSION = "27.0.1-jre"
 
-GUAVA_BIN_SHA1 = "6a806eff209f36f635f943e16d97491f00f6bfab"
+GUAVA_BIN_SHA1 = "bd41a290787b5301e63929676d792c507bbc00ae"
 
 GUAVA_DOC_URL = "https://google.github.io/guava/releases/" + GUAVA_VERSION + "/api/docs/"
diff --git a/plugins/hooks b/plugins/hooks
index de469e8..25ac76f 160000
--- a/plugins/hooks
+++ b/plugins/hooks
@@ -1 +1 @@
-Subproject commit de469e8e2598779773652abb43a0356650e257b3
+Subproject commit 25ac76fe18537c33f9f27c5463a081449c13ba67
diff --git a/plugins/replication b/plugins/replication
index bc5efb5..3ce09db 160000
--- a/plugins/replication
+++ b/plugins/replication
@@ -1 +1 @@
-Subproject commit bc5efb5b60a5a93c25c075f3667841e02532a99c
+Subproject commit 3ce09db0cae09038f2924f1ff8f097e6c91c7a1e
diff --git a/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.html b/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.html
index 9a3fc03..8c152b6 100644
--- a/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.html
+++ b/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.html
@@ -165,8 +165,9 @@
         hidden$="[[isColumnHidden('Assignee', visibleChangeTableColumns)]]">
       <template is="dom-if" if="[[change.assignee]]">
         <gr-account-link
+            id="assigneeAccountLink"
             account="[[change.assignee]]"
-            additional-text="[[_computeAccountStatusString(change.owner)]]"></gr-account-link>
+            additional-text="[[_computeAccountStatusString(change.assignee)]]"></gr-account-link>
       </template>
       <template is="dom-if" if="[[!change.assignee]]">
         <span class="placeholder">--</span>
diff --git a/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item_test.html b/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item_test.html
index aaad362..3637653 100644
--- a/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item_test.html
+++ b/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item_test.html
@@ -182,10 +182,13 @@
       element.change = {
         assignee: {
           name: 'test',
+          status: 'test',
         },
       };
       flushAsynchronousOperations();
       assert.isOk(element.$$('.assignee gr-account-link'));
+      assert.equal(Polymer.dom(element.root)
+          .querySelector('#assigneeAccountLink').additionalText, '(test)');
     });
 
     test('_computeAccountStatusString', () => {
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html
index 098a4af..42a262a 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html
@@ -124,26 +124,13 @@
           '_groupsChanged(_groups.splices)',
         ],
 
-        attached() {
-          // Setup annotation layers.
-          const layers = [
-            this._createTrailingWhitespaceLayer(),
-            this.$.syntaxLayer,
-            this._createIntralineLayer(),
-            this._createTabIndicatorLayer(),
-            this.$.rangeLayer,
-          ];
-
-          // Get layers from plugins (if any).
-          for (const pluginLayer of this.$.jsAPI.getDiffLayers(
-              this.diffPath, this.changeNum, this.patchNum)) {
-            layers.push(pluginLayer);
-          }
-
-          this._layers = layers;
-        },
-
         render(keyLocations, prefs) {
+          // Setting up annotation layers must happen after plugins are
+          // installed, and |render| satisfies the requirement, however,
+          // |attached| doesn't because in the diff view page, the element is
+          // attached before plugins are installed.
+          this._setupAnnotationLayers();
+
           this.$.syntaxLayer.enabled = prefs.syntax_highlighting;
           this._showTabs = !!prefs.show_tabs;
           this._showTrailingWhitespace = !!prefs.show_whitespace_errors;
@@ -188,6 +175,24 @@
               });
         },
 
+        _setupAnnotationLayers() {
+          const layers = [
+            this._createTrailingWhitespaceLayer(),
+            this.$.syntaxLayer,
+            this._createIntralineLayer(),
+            this._createTabIndicatorLayer(),
+            this.$.rangeLayer,
+          ];
+
+          // Get layers from plugins (if any).
+          for (const pluginLayer of this.$.jsAPI.getDiffLayers(
+              this.diffPath, this.changeNum, this.patchNum)) {
+            layers.push(pluginLayer);
+          }
+
+          this._layers = layers;
+        },
+
         getLineElByChild(node) {
           while (node) {
             if (node instanceof Element) {
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html
index 1b0ba04..294d085 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html
@@ -582,13 +582,14 @@
       setup(() => {
         element = fixture('basic');
         element._showTrailingWhitespace = true;
+        element._setupAnnotationLayers();
         initialLayersCount = element._layers.length;
       });
 
       test('no plugin layers', () => {
         const getDiffLayersStub = sinon.stub(element.$.jsAPI, 'getDiffLayers')
                                        .returns([]);
-        element.attached();
+        element._setupAnnotationLayers();
         assert.isTrue(getDiffLayersStub.called);
         assert.equal(element._layers.length, initialLayersCount);
       });
@@ -596,9 +597,9 @@
       test('with plugin layers', () => {
         const getDiffLayersStub = sinon.stub(element.$.jsAPI, 'getDiffLayers')
                                        .returns([{}, {}]);
-        element.attached();
+        element._setupAnnotationLayers();
         assert.isTrue(getDiffLayersStub.called);
-        assert.equal(element._layers.length, initialLayersCount+2);
+        assert.equal(element._layers.length, initialLayersCount + 2);
       });
     });
 
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host.js b/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host.js
index 8b9d8066..fd460cc 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host.js
@@ -45,24 +45,6 @@
     return !!(diff.binary && (isA || isB));
   }
 
-  /**
-   * Compare two ranges. Either argument may be falsy, but will only return
-   * true if both are falsy or if neither are falsy and have the same position
-   * values.
-   *
-   * @param {Gerrit.Range=} a range 1
-   * @param {Gerrit.Range=} b range 2
-   * @return {boolean}
-   */
-  function rangesEqual(a, b) {
-    if (!a && !b) { return true; }
-    if (!a || !b) { return false; }
-    return a.start_line === b.start_line &&
-        a.start_character === b.start_character &&
-        a.end_line === b.end_line &&
-        a.end_character === b.end_character;
-  }
-
   /** @enum {string} */
   Gerrit.DiffSide = {
     LEFT: 'left',
@@ -652,7 +634,7 @@
       function matchesRange(threadEl) {
         const threadRange = /** @type {!Gerrit.Range} */(
             JSON.parse(threadEl.getAttribute('range')));
-        return rangesEqual(threadRange, range);
+        return Gerrit.rangesEqual(threadRange, range);
       }
 
       const filteredThreadEls = this._filterThreadElsForLocation(
diff --git a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js
index 996d484..b134d4e 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js
@@ -55,6 +55,24 @@
    *             end_line: number, end_character: number}} */
   Gerrit.Range;
 
+  /**
+   * Compare two ranges. Either argument may be falsy, but will only return
+   * true if both are falsy or if neither are falsy and have the same position
+   * values.
+   *
+   * @param {Gerrit.Range=} a range 1
+   * @param {Gerrit.Range=} b range 2
+   * @return {boolean}
+   */
+  Gerrit.rangesEqual = function(a, b) {
+    if (!a && !b) { return true; }
+    if (!a || !b) { return false; }
+    return a.start_line === b.start_line &&
+        a.start_character === b.start_character &&
+        a.end_line === b.end_line &&
+        a.end_character === b.end_character;
+  };
+
   function isThreadEl(node) {
     return node.nodeType === Node.ELEMENT_NODE &&
         node.classList.contains('comment-thread');
@@ -257,18 +275,14 @@
     _observeNodes() {
       this._nodeObserver = Polymer.dom(this).observeNodes(info => {
         const addedThreadEls = info.addedNodes.filter(isThreadEl);
-        // In principle we should also handle removed nodes, but I have not
-        // figured out how to do that yet without also catching all the removals
-        // caused by further redistribution. Right now, comments are never
-        // removed by no longer slotting them in, so I decided to not handle
-        // this situation until it occurs.
-        this._updateRanges(addedThreadEls);
-        this._updateKeyLocations(addedThreadEls);
+        const removedThreadEls = info.removedNodes.filter(isThreadEl);
+        this._updateRanges(addedThreadEls, removedThreadEls);
+        this._updateKeyLocations(addedThreadEls, removedThreadEls);
         this._redispatchHoverEvents(addedThreadEls);
       });
     },
 
-    _updateRanges(addedThreadEls) {
+    _updateRanges(addedThreadEls, removedThreadEls) {
       function commentRangeFromThreadEl(threadEl) {
         const side = threadEl.getAttribute('comment-side');
         const range = JSON.parse(threadEl.getAttribute('range'));
@@ -278,15 +292,30 @@
       const addedCommentRanges = addedThreadEls
           .map(commentRangeFromThreadEl)
           .filter(({range}) => range);
+      const removedCommentRanges = removedThreadEls
+          .map(commentRangeFromThreadEl)
+          .filter(({range}) => range);
+      for (const removedCommentRange of removedCommentRanges) {
+        const i = this._commentRanges.findIndex(commentRange => {
+          return commentRange.side === removedCommentRange.side &&
+              Gerrit.rangesEqual(commentRange.range, removedCommentRange.range);
+        });
+        this.splice('_commentRanges', i, 1);
+      }
       this.push('_commentRanges', ...addedCommentRanges);
     },
 
-    _updateKeyLocations(addedThreadEls) {
+    _updateKeyLocations(addedThreadEls, removedThreadEls) {
       for (const threadEl of addedThreadEls) {
         const commentSide = threadEl.getAttribute('comment-side');
         const lineNum = threadEl.getAttribute('line-num') || GrDiffLine.FILE;
         this._keyLocations[commentSide][lineNum] = true;
       }
+      for (const threadEl of removedThreadEls) {
+        const commentSide = threadEl.getAttribute('comment-side');
+        const lineNum = threadEl.getAttribute('line-num') || GrDiffLine.FILE;
+        this._keyLocations[commentSide][lineNum] = false;
+      }
     },
 
     // Dispatch events that are handled by the gr-diff-highlight.
@@ -628,11 +657,11 @@
     _handleRenderContent() {
       this._incrementalNodeObserver = Polymer.dom(this).observeNodes(info => {
         const addedThreadEls = info.addedNodes.filter(isThreadEl);
-        // In principle we should also handle removed nodes, but I have not
-        // figured out how to do that yet without also catching all the removals
-        // caused by further redistribution. Right now, comments are never
-        // removed by no longer slotting them in, so I decided to not handle
-        // this situation until it occurs.
+        // Removed nodes do not need to be handled because all this code does is
+        // adding a slot for the added thread elements, and the extra slots do
+        // not hurt. It's probably a bigger performance cost to remove them than
+        // to keep them around. Medium term we can even consider to add one slot
+        // for each line from the start.
         for (const threadEl of addedThreadEls) {
           const lineNumString = threadEl.getAttribute('line-num') || 'FILE';
           const commentSide = threadEl.getAttribute('comment-side');
diff --git a/resources/com/google/gerrit/reviewdb/server/index_postgres.sql b/resources/com/google/gerrit/reviewdb/server/index_postgres.sql
index f2f24e1..439fed7 100644
--- a/resources/com/google/gerrit/reviewdb/server/index_postgres.sql
+++ b/resources/com/google/gerrit/reviewdb/server/index_postgres.sql
@@ -8,7 +8,6 @@
 ALTER TABLE patch_comments CLUSTER ON patch_comments_pkey;
 ALTER TABLE patch_set_approvals CLUSTER ON patch_set_approvals_pkey;
 
-ALTER TABLE account_group_members CLUSTER ON account_group_members_pkey;
 CLUSTER;