diff --git a/Documentation/config-accounts.txt b/Documentation/config-accounts.txt
index e642425..addada11 100644
--- a/Documentation/config-accounts.txt
+++ b/Documentation/config-accounts.txt
@@ -298,6 +298,16 @@
 This ensures that an external ID is used only once (e.g. an external ID can
 never be assigned to multiple accounts at a point in time).
 
+The following commands show how to find the SHA1 of an external ID:
+
+----
+$ echo -n 'gerrit:jdoe' | shasum
+7c2a55657d911109dbc930836e7a770fb946e8ef  -
+
+$ echo -n 'username:jdoe' | shasum
+e0b751ae90ef039f320e097d7d212f490e933706  -
+----
+
 [IMPORTANT]
 If the external ID key is changed manually you must adapt the note key
 to the new SHA1, otherwise the external ID becomes inconsistent and is
@@ -312,6 +322,20 @@
   password = bcrypt:4:LCbmSBDivK/hhGVQMfkDpA==:XcWn0pKYSVU/UJgOvhidkEtmqCp6oKB7
 ----
 
+Once SHA1 of an external ID is known the following command can be used to
+show the content of the note:
+
+----
+$ echo -n 'gerrit:jdoe' | shasum
+7c2a55657d911109dbc930836e7a770fb946e8ef  -
+
+$ git show refs/meta/external-ids:7c/2a55657d911109dbc930836e7a770fb946e8ef
+[externalId "username:jdoe"]
+  accountId = 1003407
+  email = jdoe@example.com
+  password = bcrypt:4:LCbmSBDivK/hhGVQMfkDpA==:XcWn0pKYSVU/UJgOvhidkEtmqCp6oKB7
+----
+
 The config file has one `externalId` section. The external ID key, which
 consists of scheme and ID in the format '<scheme>:<id>', is used as
 subsection name.
diff --git a/java/com/google/gerrit/httpd/RequestCleanupFilter.java b/java/com/google/gerrit/httpd/RequestCleanupFilter.java
new file mode 100644
index 0000000..30c795e
--- /dev/null
+++ b/java/com/google/gerrit/httpd/RequestCleanupFilter.java
@@ -0,0 +1,65 @@
+// Copyright (C) 2019 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.httpd;
+
+import com.google.gerrit.server.RequestCleanup;
+import com.google.inject.Inject;
+import com.google.inject.Module;
+import com.google.inject.Provider;
+import com.google.inject.Singleton;
+import com.google.inject.servlet.ServletModule;
+import java.io.IOException;
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+
+/** Executes any pending {@link RequestCleanup} at the end of a request. */
+@Singleton
+public class RequestCleanupFilter implements Filter {
+  public static Module module() {
+    return new ServletModule() {
+      @Override
+      protected void configureServlets() {
+        filter("/*").through(RequestCleanupFilter.class);
+      }
+    };
+  }
+
+  private final Provider<RequestCleanup> cleanup;
+
+  @Inject
+  RequestCleanupFilter(Provider<RequestCleanup> r) {
+    cleanup = r;
+  }
+
+  @Override
+  public void init(FilterConfig filterConfig) {}
+
+  @Override
+  public void destroy() {}
+
+  @Override
+  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
+      throws IOException, ServletException {
+    try {
+      chain.doFilter(request, response);
+    } finally {
+      cleanup.get().run();
+    }
+  }
+}
diff --git a/java/com/google/gerrit/httpd/RequestContextFilter.java b/java/com/google/gerrit/httpd/RequestContextFilter.java
index 6e02796..effbac0 100644
--- a/java/com/google/gerrit/httpd/RequestContextFilter.java
+++ b/java/com/google/gerrit/httpd/RequestContextFilter.java
@@ -14,7 +14,6 @@
 
 package com.google.gerrit.httpd;
 
-import com.google.gerrit.server.RequestCleanup;
 import com.google.gerrit.server.util.RequestContext;
 import com.google.gerrit.server.util.ThreadLocalRequestContext;
 import com.google.inject.Inject;
@@ -30,7 +29,7 @@
 import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
 
-/** Executes any pending {@link RequestCleanup} at the end of a request. */
+/** Set the request context for the downstream filters and invocation. */
 @Singleton
 public class RequestContextFilter implements Filter {
   public static Module module() {
@@ -42,14 +41,11 @@
     };
   }
 
-  private final Provider<RequestCleanup> cleanup;
   private final Provider<HttpRequestContext> requestContext;
   private final ThreadLocalRequestContext local;
 
   @Inject
-  RequestContextFilter(
-      Provider<RequestCleanup> r, Provider<HttpRequestContext> c, ThreadLocalRequestContext l) {
-    cleanup = r;
+  RequestContextFilter(Provider<HttpRequestContext> c, ThreadLocalRequestContext l) {
     requestContext = c;
     local = l;
   }
@@ -65,11 +61,7 @@
       throws IOException, ServletException {
     RequestContext old = local.setContext(requestContext.get());
     try {
-      try {
-        chain.doFilter(request, response);
-      } finally {
-        cleanup.get().run();
-      }
+      chain.doFilter(request, response);
     } finally {
       local.setContext(old);
     }
diff --git a/java/com/google/gerrit/httpd/init/WebAppInitializer.java b/java/com/google/gerrit/httpd/init/WebAppInitializer.java
index 391e20f..1b5754d 100644
--- a/java/com/google/gerrit/httpd/init/WebAppInitializer.java
+++ b/java/com/google/gerrit/httpd/init/WebAppInitializer.java
@@ -27,6 +27,7 @@
 import com.google.gerrit.httpd.GitOverHttpModule;
 import com.google.gerrit.httpd.H2CacheBasedWebSession;
 import com.google.gerrit.httpd.HttpCanonicalWebUrlProvider;
+import com.google.gerrit.httpd.RequestCleanupFilter;
 import com.google.gerrit.httpd.RequestContextFilter;
 import com.google.gerrit.httpd.RequestMetricsFilter;
 import com.google.gerrit.httpd.RequireSslFilter;
@@ -373,6 +374,7 @@
     modules.add(RequestMetricsFilter.module());
     modules.add(sysInjector.getInstance(GerritAuthModule.class));
     modules.add(sysInjector.getInstance(GitOverHttpModule.class));
+    modules.add(RequestCleanupFilter.module());
     modules.add(AllRequestFilter.module());
     modules.add(sysInjector.getInstance(WebModule.class));
     modules.add(sysInjector.getInstance(RequireSslFilter.Module.class));
diff --git a/java/com/google/gerrit/pgm/Daemon.java b/java/com/google/gerrit/pgm/Daemon.java
index c5b21af..848f9b6 100644
--- a/java/com/google/gerrit/pgm/Daemon.java
+++ b/java/com/google/gerrit/pgm/Daemon.java
@@ -31,6 +31,7 @@
 import com.google.gerrit.httpd.GitOverHttpModule;
 import com.google.gerrit.httpd.H2CacheBasedWebSession;
 import com.google.gerrit.httpd.HttpCanonicalWebUrlProvider;
+import com.google.gerrit.httpd.RequestCleanupFilter;
 import com.google.gerrit.httpd.RequestContextFilter;
 import com.google.gerrit.httpd.RequestMetricsFilter;
 import com.google.gerrit.httpd.RequireSslFilter;
@@ -552,6 +553,7 @@
     if (sshd) {
       modules.add(new ProjectQoSFilter.Module());
     }
+    modules.add(RequestCleanupFilter.module());
     modules.add(AllRequestFilter.module());
     modules.add(sysInjector.getInstance(WebModule.class));
     modules.add(sysInjector.getInstance(RequireSslFilter.Module.class));
diff --git a/java/com/google/gerrit/pgm/http/jetty/HttpLog.java b/java/com/google/gerrit/pgm/http/jetty/HttpLog.java
index dab9d7e..809f7bc 100644
--- a/java/com/google/gerrit/pgm/http/jetty/HttpLog.java
+++ b/java/com/google/gerrit/pgm/http/jetty/HttpLog.java
@@ -73,7 +73,7 @@
             TimeUtil.nowMs(), // when
             Level.INFO, // level
             "", // message text
-            "HTTPD", // thread name
+            Thread.currentThread().getName(), // thread name
             null, // exception information
             null, // current NDC string
             null, // caller location
diff --git a/java/com/google/gerrit/pgm/http/jetty/HttpLogLayout.java b/java/com/google/gerrit/pgm/http/jetty/HttpLogLayout.java
index bd7d998..4b52c6f 100644
--- a/java/com/google/gerrit/pgm/http/jetty/HttpLogLayout.java
+++ b/java/com/google/gerrit/pgm/http/jetty/HttpLogLayout.java
@@ -41,6 +41,11 @@
     opt(buf, event, HttpLog.P_HOST);
 
     buf.append(' ');
+    buf.append('[');
+    buf.append(event.getThreadName());
+    buf.append(']');
+
+    buf.append(' ');
     buf.append('-'); // identd on client system (never requested)
 
     buf.append(' ');
diff --git a/java/com/google/gerrit/server/RequestCleanup.java b/java/com/google/gerrit/server/RequestCleanup.java
index 7ed9287..f405c57 100644
--- a/java/com/google/gerrit/server/RequestCleanup.java
+++ b/java/com/google/gerrit/server/RequestCleanup.java
@@ -31,9 +31,7 @@
   /** Register a task to be completed after the request ends. */
   public void add(Runnable task) {
     synchronized (cleanup) {
-      if (ran) {
-        throw new IllegalStateException("Request has already been cleaned up");
-      }
+      assertNotRan();
       cleanup.add(task);
     }
   }
@@ -41,6 +39,7 @@
   @Override
   public void run() {
     synchronized (cleanup) {
+      assertNotRan();
       ran = true;
       for (Iterator<Runnable> i = cleanup.iterator(); i.hasNext(); ) {
         try {
@@ -52,4 +51,10 @@
       }
     }
   }
+
+  private void assertNotRan() {
+    if (ran) {
+      throw new IllegalStateException("Request has already been cleaned up");
+    }
+  }
 }
diff --git a/java/com/google/gerrit/sshd/SshLog.java b/java/com/google/gerrit/sshd/SshLog.java
index 5fb75c8..6ea03c6 100644
--- a/java/com/google/gerrit/sshd/SshLog.java
+++ b/java/com/google/gerrit/sshd/SshLog.java
@@ -250,7 +250,7 @@
             TimeUtil.nowMs(), // when
             Level.INFO, // level
             msg, // message text
-            "SSHD", // thread name
+            Thread.currentThread().getName(), // thread name
             null, // exception information
             null, // current NDC string
             null, // caller location
diff --git a/java/com/google/gerrit/sshd/SshLogLayout.java b/java/com/google/gerrit/sshd/SshLogLayout.java
index 442ec52..fd7fef1 100644
--- a/java/com/google/gerrit/sshd/SshLogLayout.java
+++ b/java/com/google/gerrit/sshd/SshLogLayout.java
@@ -54,6 +54,12 @@
     buf.append(']');
 
     req(P_SESSION, buf, event);
+
+    buf.append(' ');
+    buf.append('[');
+    buf.append(event.getThreadName());
+    buf.append(']');
+
     req(P_USER_NAME, buf, event);
     req(P_ACCOUNT_ID, buf, event);
 
diff --git a/javatests/com/google/gerrit/acceptance/git/AbstractGitOverHttpServlet.java b/javatests/com/google/gerrit/acceptance/git/AbstractGitOverHttpServlet.java
new file mode 100644
index 0000000..fe1c264
--- /dev/null
+++ b/javatests/com/google/gerrit/acceptance/git/AbstractGitOverHttpServlet.java
@@ -0,0 +1,99 @@
+// Copyright (C) 2019 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.acceptance.git;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.google.common.collect.ImmutableList;
+import com.google.gerrit.acceptance.FakeGroupAuditService;
+import com.google.gerrit.acceptance.Sandboxed;
+import com.google.gerrit.server.AnonymousUser;
+import com.google.gerrit.server.audit.HttpAuditEvent;
+import com.google.inject.Inject;
+import javax.servlet.http.HttpServletResponse;
+import org.eclipse.jgit.junit.TestRepository;
+import org.eclipse.jgit.lib.Repository;
+import org.eclipse.jgit.transport.CredentialsProvider;
+import org.eclipse.jgit.transport.RefSpec;
+import org.eclipse.jgit.transport.UsernamePasswordCredentialsProvider;
+import org.junit.Before;
+import org.junit.Test;
+
+public class AbstractGitOverHttpServlet extends AbstractPushForReview {
+  @Inject protected FakeGroupAuditService auditService;
+
+  @Before
+  public void beforeEach() throws Exception {
+    CredentialsProvider.setDefault(
+        new UsernamePasswordCredentialsProvider(admin.username(), admin.httpPassword()));
+    selectProtocol(AbstractPushForReview.Protocol.HTTP);
+    // Don't clear audit events here, since we can't guarantee all test setup has run yet.
+  }
+
+  @Test
+  @Sandboxed
+  public void receivePackAuditEventLog() throws Exception {
+    auditService.drainHttpAuditEvents();
+    testRepo
+        .git()
+        .push()
+        .setRemote("origin")
+        .setRefSpecs(new RefSpec("HEAD:refs/for/master"))
+        .call();
+
+    ImmutableList<HttpAuditEvent> auditEvents = auditService.drainHttpAuditEvents();
+    assertThat(auditEvents).hasSize(2);
+
+    HttpAuditEvent lsRemote = auditEvents.get(0);
+    assertThat(lsRemote.who.getAccountId()).isEqualTo(admin.id());
+    assertThat(lsRemote.what).endsWith("/info/refs?service=git-receive-pack");
+    assertThat(lsRemote.params).containsExactly("service", "git-receive-pack");
+    assertThat(lsRemote.httpStatus).isEqualTo(HttpServletResponse.SC_OK);
+
+    HttpAuditEvent receivePack = auditEvents.get(1);
+    assertThat(receivePack.who.getAccountId()).isEqualTo(admin.id());
+    assertThat(receivePack.what).endsWith("/git-receive-pack");
+    assertThat(receivePack.params).isEmpty();
+    assertThat(receivePack.httpStatus).isEqualTo(HttpServletResponse.SC_OK);
+  }
+
+  @Test
+  @Sandboxed
+  public void uploadPackAuditEventLog() throws Exception {
+    auditService.drainHttpAuditEvents();
+    // testRepo is already a clone. Make a server-side change so we have something to fetch.
+    try (Repository repo = repoManager.openRepository(project);
+        TestRepository<?> testRepo = new TestRepository<>(repo)) {
+      testRepo.branch("master").commit().create();
+    }
+    testRepo.git().fetch().call();
+
+    ImmutableList<HttpAuditEvent> auditEvents = auditService.drainHttpAuditEvents();
+    assertThat(auditEvents).hasSize(2);
+
+    HttpAuditEvent lsRemote = auditEvents.get(0);
+    // Repo URL doesn't include /a, so fetching doesn't cause authentication.
+    assertThat(lsRemote.who).isInstanceOf(AnonymousUser.class);
+    assertThat(lsRemote.what).endsWith("/info/refs?service=git-upload-pack");
+    assertThat(lsRemote.params).containsExactly("service", "git-upload-pack");
+    assertThat(lsRemote.httpStatus).isEqualTo(HttpServletResponse.SC_OK);
+
+    HttpAuditEvent uploadPack = auditEvents.get(1);
+    assertThat(lsRemote.who).isInstanceOf(AnonymousUser.class);
+    assertThat(uploadPack.what).endsWith("/git-upload-pack");
+    assertThat(uploadPack.params).isEmpty();
+    assertThat(uploadPack.httpStatus).isEqualTo(HttpServletResponse.SC_OK);
+  }
+}
diff --git a/javatests/com/google/gerrit/acceptance/git/BUILD b/javatests/com/google/gerrit/acceptance/git/BUILD
index b3e0f5a..24a83e0 100644
--- a/javatests/com/google/gerrit/acceptance/git/BUILD
+++ b/javatests/com/google/gerrit/acceptance/git/BUILD
@@ -15,7 +15,7 @@
 java_library(
     name = "push_for_review",
     testonly = True,
-    srcs = ["AbstractPushForReview.java"],
+    srcs = glob(["Abstract*.java"]),
     deps = [
         "//java/com/google/gerrit/acceptance:lib",
         "//java/com/google/gerrit/mail",
diff --git a/javatests/com/google/gerrit/acceptance/git/GitOverHttpServletIT.java b/javatests/com/google/gerrit/acceptance/git/GitOverHttpServletIT.java
new file mode 100644
index 0000000..e9f9b82
--- /dev/null
+++ b/javatests/com/google/gerrit/acceptance/git/GitOverHttpServletIT.java
@@ -0,0 +1,17 @@
+// 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.
+// 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.acceptance.git;
+
+public class GitOverHttpServletIT extends AbstractGitOverHttpServlet {}
diff --git a/javatests/com/google/gerrit/acceptance/git/GitOverHttpServletWithSshdEnabledIT.java b/javatests/com/google/gerrit/acceptance/git/GitOverHttpServletWithSshdEnabledIT.java
new file mode 100644
index 0000000..9b9372f
--- /dev/null
+++ b/javatests/com/google/gerrit/acceptance/git/GitOverHttpServletWithSshdEnabledIT.java
@@ -0,0 +1,20 @@
+// Copyright (C) 2019 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.acceptance.git;
+
+import com.google.gerrit.acceptance.UseSsh;
+
+@UseSsh
+public class GitOverHttpServletWithSshdEnabledIT extends AbstractGitOverHttpServlet {}
diff --git a/polygerrit-ui/app/.eslintrc.json b/polygerrit-ui/app/.eslintrc.json
index 97151f2..26e3a09 100644
--- a/polygerrit-ui/app/.eslintrc.json
+++ b/polygerrit-ui/app/.eslintrc.json
@@ -25,7 +25,13 @@
     "block-spacing": ["error", "always"],
     "brace-style": ["error", "1tbs", { "allowSingleLine": true }],
     "camelcase": "off",
-    "comma-dangle": ["error", "always-multiline"],
+    "comma-dangle": ["error", {
+        "arrays": "always-multiline",
+        "objects": "always-multiline",
+        "imports": "always-multiline",
+        "exports": "always-multiline",
+        "functions": "never"
+    }],
     "eol-last": "off",
     "indent": "off",
     "indent-legacy": ["error", 2, {
@@ -60,6 +66,9 @@
     "no-undef": "off",
     "no-useless-escape": "off",
     "no-var": "error",
+    "no-prototype-builtins": "off",
+    "no-redeclare": "off",
+    "operator-linebreak": "off",
     "object-shorthand": ["error", "always"],
     "prefer-arrow-callback": "error",
     "prefer-const": "error",
diff --git a/polygerrit-ui/app/lint_test.sh b/polygerrit-ui/app/lint_test.sh
index 35939ba..fce5fdd 100755
--- a/polygerrit-ui/app/lint_test.sh
+++ b/polygerrit-ui/app/lint_test.sh
@@ -2,15 +2,15 @@
 
 set -ex
 
-eslint_bin=$(which npm)
-if [ -z "$eslint_bin" ]; then
+npm_bin=$(which npm) && true
+if [ -z "$npm_bin" ]; then
     echo "NPM must be on the path."
     exit 1
 fi
 
-eslint_bin=$(which eslint)
-eslint_config=$(npm list -g | grep -c eslint-config-google)
-eslint_plugin=$(npm list -g | grep -c eslint-plugin-html)
+eslint_bin=$(which eslint) && true
+eslint_config=$(npm list -g | grep -c eslint-config-google) && true
+eslint_plugin=$(npm list -g | grep -c eslint-plugin-html) && true
 if [ -z "$eslint_bin" ] || [ "$eslint_config" -eq "0" ] || [ "$eslint_plugin" -eq "0" ]; then
     echo "You must install ESLint and its dependencies from NPM."
     echo "> npm install -g eslint eslint-config-google eslint-plugin-html"
@@ -19,4 +19,15 @@
     exit 1
 fi
 
-${eslint_bin} --ignore-pattern 'bower_components/' --ignore-pattern 'gr-linked-text' --ignore-pattern 'scripts/vendor' --ext .html,.js .
+# get absolute path to lint_test.sh path
+SCRIPT=$(readlink -f "$0")
+UI_PATH=$(dirname "$SCRIPT")
+
+# To make sure npm link happens in the right place
+cd ${UI_PATH}
+
+# Linking global eslint packages to the local project. Required to use eslint plugins with a global
+# eslint installation.
+npm link eslint eslint-config-google eslint-plugin-html
+
+${eslint_bin} -c ${UI_PATH}/.eslintrc.json --ignore-pattern 'node_modules/' --ignore-pattern 'bower_components/' --ignore-pattern 'gr-linked-text' --ignore-pattern 'scripts/vendor' --ext .html,.js ${UI_PATH}
diff --git a/polygerrit-ui/app/template_test.sh b/polygerrit-ui/app/template_test.sh
index 7177e8a..eb986c5 100755
--- a/polygerrit-ui/app/template_test.sh
+++ b/polygerrit-ui/app/template_test.sh
@@ -2,26 +2,26 @@
 
 set -ex
 
-node_bin=$(which node)
+node_bin=$(which node) && true
 if [ -z "$node_bin" ]; then
     echo "node must be on the path."
     exit 1
 fi
 
-npm_bin=$(which npm)
+npm_bin=$(which npm) && true
 if [[ -z "$npm_bin" ]]; then
     echo "NPM must be on the path. (https://www.npmjs.com/)"
     exit 1
 fi
 
-fried_twinkie_config=$(npm list -g | grep -c fried-twinkie)
+fried_twinkie_config=$(npm list -g | grep -c fried-twinkie) && true
 if [ -z "$npm_bin" ] || [ "$fried_twinkie_config" -eq "0" ]; then
     echo "You must install fried twinkie and its dependencies from NPM."
     echo "> npm install -g fried-twinkie"
     exit 1
 fi
 
-twinkie_version=$(npm list -g fried-twinkie@\>0.1 | grep fried-twinkie || :)
+twinkie_version=$(npm list -g fried-twinkie@\>0.1 | grep fried-twinkie || :) && true
 if [ -z "$twinkie_version" ]; then
     echo "Outdated version of fried-twinkie found. Bypassing template check."
     exit 0