diff --git a/java/com/google/gerrit/acceptance/AccountCreator.java b/java/com/google/gerrit/acceptance/AccountCreator.java
index b8a8776..d85613c 100644
--- a/java/com/google/gerrit/acceptance/AccountCreator.java
+++ b/java/com/google/gerrit/acceptance/AccountCreator.java
@@ -23,7 +23,6 @@
 import com.google.gerrit.common.errors.NoSuchGroupException;
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.AccountGroup;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.ServerInitiated;
 import com.google.gerrit.server.account.AccountsUpdate;
 import com.google.gerrit.server.account.GroupCache;
@@ -31,6 +30,7 @@
 import com.google.gerrit.server.group.InternalGroup;
 import com.google.gerrit.server.group.db.GroupsUpdate;
 import com.google.gerrit.server.group.db.InternalGroupUpdate;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
 import com.google.inject.Provider;
diff --git a/java/com/google/gerrit/acceptance/testsuite/account/AccountOperationsImpl.java b/java/com/google/gerrit/acceptance/testsuite/account/AccountOperationsImpl.java
index 7f55c97..113c19c 100644
--- a/java/com/google/gerrit/acceptance/testsuite/account/AccountOperationsImpl.java
+++ b/java/com/google/gerrit/acceptance/testsuite/account/AccountOperationsImpl.java
@@ -17,13 +17,13 @@
 import static com.google.common.base.Preconditions.checkState;
 
 import com.google.gerrit.reviewdb.client.Account;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.ServerInitiated;
 import com.google.gerrit.server.account.AccountState;
 import com.google.gerrit.server.account.Accounts;
 import com.google.gerrit.server.account.AccountsUpdate;
 import com.google.gerrit.server.account.InternalAccountUpdate;
 import com.google.gerrit.server.account.externalids.ExternalId;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
 import java.io.IOException;
diff --git a/java/com/google/gerrit/acceptance/testsuite/group/GroupOperationsImpl.java b/java/com/google/gerrit/acceptance/testsuite/group/GroupOperationsImpl.java
index 7ce5afa..ac818c9 100644
--- a/java/com/google/gerrit/acceptance/testsuite/group/GroupOperationsImpl.java
+++ b/java/com/google/gerrit/acceptance/testsuite/group/GroupOperationsImpl.java
@@ -19,7 +19,6 @@
 import com.google.gerrit.common.errors.NoSuchGroupException;
 import com.google.gerrit.reviewdb.client.AccountGroup;
 import com.google.gerrit.server.GerritPersonIdent;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.ServerInitiated;
 import com.google.gerrit.server.account.GroupUUID;
 import com.google.gerrit.server.group.InternalGroup;
@@ -27,6 +26,7 @@
 import com.google.gerrit.server.group.db.GroupsUpdate;
 import com.google.gerrit.server.group.db.InternalGroupCreation;
 import com.google.gerrit.server.group.db.InternalGroupUpdate;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gwtorm.server.OrmDuplicateKeyException;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
diff --git a/java/com/google/gerrit/pgm/init/api/SequencesOnInit.java b/java/com/google/gerrit/pgm/init/api/SequencesOnInit.java
index 70f0bb6..aa9fca2 100644
--- a/java/com/google/gerrit/pgm/init/api/SequencesOnInit.java
+++ b/java/com/google/gerrit/pgm/init/api/SequencesOnInit.java
@@ -15,10 +15,10 @@
 package com.google.gerrit.pgm.init.api;
 
 import com.google.gerrit.reviewdb.client.Project;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.extensions.events.GitReferenceUpdated;
 import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gerrit.server.notedb.RepoSequence;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
diff --git a/java/com/google/gerrit/reviewdb/client/Account.java b/java/com/google/gerrit/reviewdb/client/Account.java
index 95da391..d98474b 100644
--- a/java/com/google/gerrit/reviewdb/client/Account.java
+++ b/java/com/google/gerrit/reviewdb/client/Account.java
@@ -150,7 +150,7 @@
   /**
    * Create a new account.
    *
-   * @param newId unique id, see {@link com.google.gerrit.server.Sequences#nextAccountId()}.
+   * @param newId unique id, see {@link com.google.gerrit.server.notedb.Sequences#nextAccountId()}.
    * @param registeredOn when the account was registered.
    */
   public Account(Account.Id newId, Timestamp registeredOn) {
diff --git a/java/com/google/gerrit/server/account/AccountManager.java b/java/com/google/gerrit/server/account/AccountManager.java
index d0bd069..c7cd48d 100644
--- a/java/com/google/gerrit/server/account/AccountManager.java
+++ b/java/com/google/gerrit/server/account/AccountManager.java
@@ -30,7 +30,6 @@
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.AccountGroup;
 import com.google.gerrit.server.IdentifiedUser;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.ServerInitiated;
 import com.google.gerrit.server.account.AccountsUpdate.AccountUpdater;
 import com.google.gerrit.server.account.externalids.DuplicateExternalIdKeyException;
@@ -40,6 +39,7 @@
 import com.google.gerrit.server.config.GerritServerConfig;
 import com.google.gerrit.server.group.db.GroupsUpdate;
 import com.google.gerrit.server.group.db.InternalGroupUpdate;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.server.project.ProjectCache;
 import com.google.gerrit.server.ssh.SshKeyCache;
 import com.google.gwtorm.server.OrmException;
diff --git a/java/com/google/gerrit/server/account/AccountsUpdate.java b/java/com/google/gerrit/server/account/AccountsUpdate.java
index 5f95ecf..897d673 100644
--- a/java/com/google/gerrit/server/account/AccountsUpdate.java
+++ b/java/com/google/gerrit/server/account/AccountsUpdate.java
@@ -38,6 +38,7 @@
 import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gerrit.server.git.meta.MetaDataUpdate;
 import com.google.gerrit.server.index.change.ReindexAfterRefUpdate;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.server.update.RetryHelper;
 import com.google.gerrit.server.update.RetryHelper.Action;
 import com.google.gerrit.server.update.RetryHelper.ActionType;
@@ -80,7 +81,7 @@
  * commit in the user branch, and thus help debugging.
  *
  * <p>For creating a new account a new account ID can be retrieved from {@link
- * com.google.gerrit.server.Sequences#nextAccountId()}.
+ * Sequences#nextAccountId()}.
  *
  * <p>The account updates are written to NoteDb. In NoteDb accounts are represented as user branches
  * in the {@code All-Users} repository. Optionally a user branch can contain a 'account.config' file
diff --git a/java/com/google/gerrit/server/config/GerritGlobalModule.java b/java/com/google/gerrit/server/config/GerritGlobalModule.java
index 6eb4ad9..1cc1e8f 100644
--- a/java/com/google/gerrit/server/config/GerritGlobalModule.java
+++ b/java/com/google/gerrit/server/config/GerritGlobalModule.java
@@ -76,7 +76,6 @@
 import com.google.gerrit.server.CmdLineParserModule;
 import com.google.gerrit.server.CreateGroupPermissionSyncer;
 import com.google.gerrit.server.IdentifiedUser;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.account.AccountCacheImpl;
 import com.google.gerrit.server.account.AccountControl;
 import com.google.gerrit.server.account.AccountDeactivator;
@@ -222,7 +221,6 @@
     bind(IdGenerator.class);
     bind(RulesCache.class);
     bind(BlameCache.class).to(BlameCacheImpl.class);
-    bind(Sequences.class);
     install(authModule);
     install(AccountCacheImpl.module());
     install(BatchUpdate.module());
diff --git a/java/com/google/gerrit/server/git/receive/ReceiveCommits.java b/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
index e74e1a2..55def63 100644
--- a/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
+++ b/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
@@ -92,7 +92,6 @@
 import com.google.gerrit.server.CreateGroupPermissionSyncer;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.PatchSetUtil;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.account.AccountResolver;
 import com.google.gerrit.server.change.ChangeInserter;
 import com.google.gerrit.server.change.SetHashtagsOp;
@@ -121,6 +120,7 @@
 import com.google.gerrit.server.logging.TraceContext;
 import com.google.gerrit.server.mail.MailUtil.MailRecipients;
 import com.google.gerrit.server.notedb.ChangeNotes;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.server.patch.PatchSetInfoFactory;
 import com.google.gerrit.server.permissions.ChangePermission;
 import com.google.gerrit.server.permissions.GlobalPermission;
diff --git a/java/com/google/gerrit/server/Sequences.java b/java/com/google/gerrit/server/notedb/Sequences.java
similarity index 97%
rename from java/com/google/gerrit/server/Sequences.java
rename to java/com/google/gerrit/server/notedb/Sequences.java
index 7d98bc4..1a255f14 100644
--- a/java/com/google/gerrit/server/Sequences.java
+++ b/java/com/google/gerrit/server/notedb/Sequences.java
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package com.google.gerrit.server;
+package com.google.gerrit.server.notedb;
 
 import com.google.common.collect.ImmutableList;
 import com.google.gerrit.metrics.Description;
@@ -25,7 +25,6 @@
 import com.google.gerrit.server.config.GerritServerConfig;
 import com.google.gerrit.server.extensions.events.GitReferenceUpdated;
 import com.google.gerrit.server.git.GitRepositoryManager;
-import com.google.gerrit.server.notedb.RepoSequence;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
diff --git a/java/com/google/gerrit/server/restapi/account/CreateAccount.java b/java/com/google/gerrit/server/restapi/account/CreateAccount.java
index 2f9f2a9..b704fd1 100644
--- a/java/com/google/gerrit/server/restapi/account/CreateAccount.java
+++ b/java/com/google/gerrit/server/restapi/account/CreateAccount.java
@@ -36,7 +36,6 @@
 import com.google.gerrit.extensions.restapi.UnprocessableEntityException;
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.AccountGroup;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.UserInitiated;
 import com.google.gerrit.server.account.AccountExternalIdCreator;
 import com.google.gerrit.server.account.AccountLoader;
@@ -49,6 +48,7 @@
 import com.google.gerrit.server.group.db.GroupsUpdate;
 import com.google.gerrit.server.group.db.InternalGroupUpdate;
 import com.google.gerrit.server.mail.send.OutgoingEmailValidator;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.server.permissions.PermissionBackendException;
 import com.google.gerrit.server.plugincontext.PluginSetContext;
 import com.google.gerrit.server.ssh.SshKeyCache;
diff --git a/java/com/google/gerrit/server/restapi/change/CherryPickChange.java b/java/com/google/gerrit/server/restapi/change/CherryPickChange.java
index cbf570f..5317efc 100644
--- a/java/com/google/gerrit/server/restapi/change/CherryPickChange.java
+++ b/java/com/google/gerrit/server/restapi/change/CherryPickChange.java
@@ -36,7 +36,6 @@
 import com.google.gerrit.server.GerritPersonIdent;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.ReviewerSet;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.change.ChangeInserter;
 import com.google.gerrit.server.change.NotifyUtil;
 import com.google.gerrit.server.change.PatchSetInserter;
@@ -46,6 +45,7 @@
 import com.google.gerrit.server.git.MergeUtil;
 import com.google.gerrit.server.notedb.ChangeNotes;
 import com.google.gerrit.server.notedb.ReviewerStateInternal;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.server.project.InvalidChangeOperationException;
 import com.google.gerrit.server.project.NoSuchProjectException;
 import com.google.gerrit.server.project.ProjectCache;
diff --git a/java/com/google/gerrit/server/restapi/change/CreateChange.java b/java/com/google/gerrit/server/restapi/change/CreateChange.java
index af54ed5..2bc3d6db 100644
--- a/java/com/google/gerrit/server/restapi/change/CreateChange.java
+++ b/java/com/google/gerrit/server/restapi/change/CreateChange.java
@@ -43,7 +43,6 @@
 import com.google.gerrit.server.GerritPersonIdent;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.PatchSetUtil;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.account.AccountState;
 import com.google.gerrit.server.change.ChangeFinder;
 import com.google.gerrit.server.change.ChangeInserter;
@@ -55,6 +54,7 @@
 import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gerrit.server.git.MergeUtil;
 import com.google.gerrit.server.notedb.ChangeNotes;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.server.permissions.ChangePermission;
 import com.google.gerrit.server.permissions.PermissionBackend;
 import com.google.gerrit.server.permissions.PermissionBackendException;
diff --git a/java/com/google/gerrit/server/restapi/change/Revert.java b/java/com/google/gerrit/server/restapi/change/Revert.java
index c81b0f8..b070b1c 100644
--- a/java/com/google/gerrit/server/restapi/change/Revert.java
+++ b/java/com/google/gerrit/server/restapi/change/Revert.java
@@ -40,7 +40,6 @@
 import com.google.gerrit.server.GerritPersonIdent;
 import com.google.gerrit.server.PatchSetUtil;
 import com.google.gerrit.server.ReviewerSet;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.change.ChangeInserter;
 import com.google.gerrit.server.change.ChangeJson;
 import com.google.gerrit.server.change.ChangeMessages;
@@ -51,6 +50,7 @@
 import com.google.gerrit.server.mail.send.RevertedSender;
 import com.google.gerrit.server.notedb.ChangeNotes;
 import com.google.gerrit.server.notedb.ReviewerStateInternal;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.server.permissions.PermissionBackend;
 import com.google.gerrit.server.permissions.PermissionBackendException;
 import com.google.gerrit.server.project.ContributorAgreementsChecker;
diff --git a/java/com/google/gerrit/server/restapi/group/CreateGroup.java b/java/com/google/gerrit/server/restapi/group/CreateGroup.java
index 2fb668f..e6bd791 100644
--- a/java/com/google/gerrit/server/restapi/group/CreateGroup.java
+++ b/java/com/google/gerrit/server/restapi/group/CreateGroup.java
@@ -36,7 +36,6 @@
 import com.google.gerrit.reviewdb.client.AccountGroup;
 import com.google.gerrit.server.GerritPersonIdent;
 import com.google.gerrit.server.IdentifiedUser;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.UserInitiated;
 import com.google.gerrit.server.account.CreateGroupArgs;
 import com.google.gerrit.server.account.GroupCache;
@@ -50,6 +49,7 @@
 import com.google.gerrit.server.group.db.GroupsUpdate;
 import com.google.gerrit.server.group.db.InternalGroupCreation;
 import com.google.gerrit.server.group.db.InternalGroupUpdate;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.server.permissions.PermissionBackendException;
 import com.google.gerrit.server.plugincontext.PluginSetContext;
 import com.google.gerrit.server.validators.GroupCreationValidationListener;
diff --git a/java/com/google/gerrit/server/restapi/project/CreateAccessChange.java b/java/com/google/gerrit/server/restapi/project/CreateAccessChange.java
index 870eb0f..c3bbb60 100644
--- a/java/com/google/gerrit/server/restapi/project/CreateAccessChange.java
+++ b/java/com/google/gerrit/server/restapi/project/CreateAccessChange.java
@@ -29,10 +29,10 @@
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.client.RefNames;
 import com.google.gerrit.server.ApprovalsUtil;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.change.ChangeInserter;
 import com.google.gerrit.server.change.ChangeJson;
 import com.google.gerrit.server.git.meta.MetaDataUpdate;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.server.permissions.PermissionBackend;
 import com.google.gerrit.server.permissions.PermissionBackendException;
 import com.google.gerrit.server.permissions.ProjectPermission;
diff --git a/java/com/google/gerrit/server/schema/AllProjectsCreator.java b/java/com/google/gerrit/server/schema/AllProjectsCreator.java
index 0f1caa8..1865f15 100644
--- a/java/com/google/gerrit/server/schema/AllProjectsCreator.java
+++ b/java/com/google/gerrit/server/schema/AllProjectsCreator.java
@@ -40,7 +40,6 @@
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.client.RefNames;
 import com.google.gerrit.server.GerritPersonIdent;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.UsedAt;
 import com.google.gerrit.server.config.AllProjectsName;
 import com.google.gerrit.server.extensions.events.GitReferenceUpdated;
@@ -48,6 +47,7 @@
 import com.google.gerrit.server.git.meta.MetaDataUpdate;
 import com.google.gerrit.server.group.SystemGroupBackend;
 import com.google.gerrit.server.notedb.RepoSequence;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.server.project.ProjectConfig;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
diff --git a/java/com/google/gerrit/server/schema/NoteDbSchemaUpdater.java b/java/com/google/gerrit/server/schema/NoteDbSchemaUpdater.java
index b31710e..281f0ab 100644
--- a/java/com/google/gerrit/server/schema/NoteDbSchemaUpdater.java
+++ b/java/com/google/gerrit/server/schema/NoteDbSchemaUpdater.java
@@ -21,10 +21,10 @@
 import com.google.common.collect.ImmutableSortedMap;
 import com.google.common.collect.ImmutableSortedSet;
 import com.google.gerrit.reviewdb.client.RefNames;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.config.AllUsersName;
 import com.google.gerrit.server.config.GerritServerConfig;
 import com.google.gerrit.server.git.GitRepositoryManager;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
 import java.io.IOException;
diff --git a/java/com/google/gerrit/server/schema/SchemaCreatorImpl.java b/java/com/google/gerrit/server/schema/SchemaCreatorImpl.java
index 0e854d6..1c04c16 100644
--- a/java/com/google/gerrit/server/schema/SchemaCreatorImpl.java
+++ b/java/com/google/gerrit/server/schema/SchemaCreatorImpl.java
@@ -21,7 +21,6 @@
 import com.google.gerrit.metrics.MetricMaker;
 import com.google.gerrit.reviewdb.client.AccountGroup;
 import com.google.gerrit.server.GerritPersonIdent;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.account.GroupUUID;
 import com.google.gerrit.server.config.AllProjectsName;
 import com.google.gerrit.server.config.AllUsersName;
@@ -36,6 +35,7 @@
 import com.google.gerrit.server.group.db.InternalGroupUpdate;
 import com.google.gerrit.server.index.group.GroupIndex;
 import com.google.gerrit.server.index.group.GroupIndexCollection;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gwtorm.server.OrmDuplicateKeyException;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
diff --git a/javatests/com/google/gerrit/acceptance/api/accounts/AccountIT.java b/javatests/com/google/gerrit/acceptance/api/accounts/AccountIT.java
index 6dc03ae..3511fc4 100644
--- a/javatests/com/google/gerrit/acceptance/api/accounts/AccountIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/accounts/AccountIT.java
@@ -107,7 +107,6 @@
 import com.google.gerrit.reviewdb.client.Change;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.client.RefNames;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.ServerInitiated;
 import com.google.gerrit.server.account.AccountManager;
 import com.google.gerrit.server.account.AccountProperties;
@@ -125,6 +124,7 @@
 import com.google.gerrit.server.git.meta.MetaDataUpdate;
 import com.google.gerrit.server.index.account.AccountIndexer;
 import com.google.gerrit.server.index.account.StalenessChecker;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.server.project.ProjectConfig;
 import com.google.gerrit.server.project.RefPattern;
 import com.google.gerrit.server.query.account.InternalAccountQuery;
diff --git a/javatests/com/google/gerrit/acceptance/api/accounts/AccountManagerIT.java b/javatests/com/google/gerrit/acceptance/api/accounts/AccountManagerIT.java
index ed5459d..327c2cd 100644
--- a/javatests/com/google/gerrit/acceptance/api/accounts/AccountManagerIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/accounts/AccountManagerIT.java
@@ -21,7 +21,6 @@
 import com.google.gerrit.acceptance.GerritConfig;
 import com.google.gerrit.common.Nullable;
 import com.google.gerrit.reviewdb.client.Account;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.ServerInitiated;
 import com.google.gerrit.server.account.AccountException;
 import com.google.gerrit.server.account.AccountManager;
@@ -33,6 +32,7 @@
 import com.google.gerrit.server.account.externalids.ExternalIdNotes;
 import com.google.gerrit.server.account.externalids.ExternalIds;
 import com.google.gerrit.server.git.meta.MetaDataUpdate;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.inject.Inject;
 import java.util.Optional;
 import org.eclipse.jgit.lib.Repository;
diff --git a/javatests/com/google/gerrit/acceptance/api/group/GroupsIT.java b/javatests/com/google/gerrit/acceptance/api/group/GroupsIT.java
index eb0f7e8..b00597c 100644
--- a/javatests/com/google/gerrit/acceptance/api/group/GroupsIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/group/GroupsIT.java
@@ -71,7 +71,6 @@
 import com.google.gerrit.reviewdb.client.AccountGroup;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.client.RefNames;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.ServerInitiated;
 import com.google.gerrit.server.account.GroupIncludeCache;
 import com.google.gerrit.server.group.InternalGroup;
@@ -84,6 +83,7 @@
 import com.google.gerrit.server.group.db.InternalGroupUpdate;
 import com.google.gerrit.server.index.group.GroupIndexer;
 import com.google.gerrit.server.index.group.StalenessChecker;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.server.util.MagicBranch;
 import com.google.gerrit.server.util.time.TimeUtil;
 import com.google.gerrit.testing.TestTimeUtil;
diff --git a/javatests/com/google/gerrit/acceptance/git/RefAdvertisementIT.java b/javatests/com/google/gerrit/acceptance/git/RefAdvertisementIT.java
index 91d5c32..062a9d5 100644
--- a/javatests/com/google/gerrit/acceptance/git/RefAdvertisementIT.java
+++ b/javatests/com/google/gerrit/acceptance/git/RefAdvertisementIT.java
@@ -44,10 +44,10 @@
 import com.google.gerrit.reviewdb.client.PatchSet;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.client.RefNames;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.config.AllUsersName;
 import com.google.gerrit.server.git.receive.ReceiveCommitsAdvertiseRefsHook;
 import com.google.gerrit.server.notedb.ChangeNoteUtil;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.server.permissions.PermissionBackend;
 import com.google.gerrit.server.permissions.PermissionBackend.RefFilterOptions;
 import com.google.gerrit.server.project.testing.Util;
diff --git a/javatests/com/google/gerrit/acceptance/server/change/ConsistencyCheckerIT.java b/javatests/com/google/gerrit/acceptance/server/change/ConsistencyCheckerIT.java
index 3073022..8bc78c3 100644
--- a/javatests/com/google/gerrit/acceptance/server/change/ConsistencyCheckerIT.java
+++ b/javatests/com/google/gerrit/acceptance/server/change/ConsistencyCheckerIT.java
@@ -36,12 +36,12 @@
 import com.google.gerrit.reviewdb.client.RefNames;
 import com.google.gerrit.server.ChangeUtil;
 import com.google.gerrit.server.IdentifiedUser;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.change.ChangeInserter;
 import com.google.gerrit.server.change.ConsistencyChecker;
 import com.google.gerrit.server.change.PatchSetInserter;
 import com.google.gerrit.server.notedb.ChangeNoteUtil;
 import com.google.gerrit.server.notedb.ChangeNotes;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.server.update.BatchUpdate;
 import com.google.gerrit.server.update.BatchUpdateOp;
 import com.google.gerrit.server.update.ChangeContext;
diff --git a/javatests/com/google/gerrit/acceptance/testsuite/request/RequestScopeOperationsImplTest.java b/javatests/com/google/gerrit/acceptance/testsuite/request/RequestScopeOperationsImplTest.java
index 9b498011..ea0bb61 100644
--- a/javatests/com/google/gerrit/acceptance/testsuite/request/RequestScopeOperationsImplTest.java
+++ b/javatests/com/google/gerrit/acceptance/testsuite/request/RequestScopeOperationsImplTest.java
@@ -29,7 +29,7 @@
 import com.google.gerrit.server.AnonymousUser;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.CurrentUser.PropertyKey;
-import com.google.gerrit.server.Sequences;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.inject.Inject;
 import com.google.inject.Provider;
 import java.util.concurrent.atomic.AtomicInteger;
diff --git a/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java b/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java
index 6390caa..9164fdb 100644
--- a/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java
+++ b/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java
@@ -81,7 +81,6 @@
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.PatchSetUtil;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.ServerInitiated;
 import com.google.gerrit.server.StarredChangesUtil;
 import com.google.gerrit.server.account.AccountCache;
@@ -99,6 +98,7 @@
 import com.google.gerrit.server.index.change.ChangeIndexCollection;
 import com.google.gerrit.server.index.change.ChangeIndexer;
 import com.google.gerrit.server.notedb.ChangeNotes;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.server.project.ProjectCache;
 import com.google.gerrit.server.project.ProjectConfig;
 import com.google.gerrit.server.schema.SchemaCreator;
diff --git a/javatests/com/google/gerrit/server/schema/NoteDbSchemaUpdaterTest.java b/javatests/com/google/gerrit/server/schema/NoteDbSchemaUpdaterTest.java
index 0d45d43..d0c179b 100644
--- a/javatests/com/google/gerrit/server/schema/NoteDbSchemaUpdaterTest.java
+++ b/javatests/com/google/gerrit/server/schema/NoteDbSchemaUpdaterTest.java
@@ -23,13 +23,13 @@
 import com.google.common.collect.ImmutableSortedMap;
 import com.google.common.collect.ImmutableSortedSet;
 import com.google.gerrit.reviewdb.client.RefNames;
-import com.google.gerrit.server.Sequences;
 import com.google.gerrit.server.config.AllProjectsName;
 import com.google.gerrit.server.config.AllUsersName;
 import com.google.gerrit.server.extensions.events.GitReferenceUpdated;
 import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gerrit.server.notedb.IntBlob;
 import com.google.gerrit.server.notedb.RepoSequence;
+import com.google.gerrit.server.notedb.Sequences;
 import com.google.gerrit.testing.GerritBaseTests;
 import com.google.gerrit.testing.InMemoryRepositoryManager;
 import com.google.gerrit.testing.TestUpdateUI;