diff --git a/Documentation/config-gerrit.txt b/Documentation/config-gerrit.txt
index 86375670e6..c96e6855f3 100644
--- a/Documentation/config-gerrit.txt
+++ b/Documentation/config-gerrit.txt
@@ -3143,11 +3143,9 @@ WARNING: Support for Elasticsearch is still experimental and is not recommended
 for production use. For compatibility information, please refer to the
 link:https://www.gerritcodereview.com/elasticsearch.html[project homepage].
 
-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
-groups indices starting with Elasticsearch 6.2.
+In Elasticsearch 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 groups
+indices starting with Elasticsearch 6.2.
 
 Note that when Gerrit is configured to use Elasticsearch, the Elasticsearch
 server(s) must be reachable during the site initialization.
diff --git a/java/com/google/gerrit/elasticsearch/AbstractElasticIndex.java b/java/com/google/gerrit/elasticsearch/AbstractElasticIndex.java
index ac60ddcfd8..2ab9c929b7 100644
--- a/java/com/google/gerrit/elasticsearch/AbstractElasticIndex.java
+++ b/java/com/google/gerrit/elasticsearch/AbstractElasticIndex.java
@@ -126,8 +126,7 @@ abstract class AbstractElasticIndex<K, V> implements Index<K, V> {
       SitePaths sitePaths,
       Schema<V> schema,
       ElasticRestClientProvider client,
-      String indexName,
-      String indexType) {
+      String indexName) {
     this.config = config;
     this.sitePaths = sitePaths;
     this.schema = schema;
@@ -136,16 +135,7 @@ abstract class AbstractElasticIndex<K, V> implements Index<K, V> {
     this.indexName = config.getIndexName(indexName, schema.getVersion());
     this.indexNameRaw = indexName;
     this.client = client;
-    this.type = client.adapter().getType(indexType);
-  }
-
-  AbstractElasticIndex(
-      ElasticConfiguration cfg,
-      SitePaths sitePaths,
-      Schema<V> schema,
-      ElasticRestClientProvider client,
-      String indexName) {
-    this(cfg, sitePaths, schema, client, indexName, indexName);
+    this.type = client.adapter().getType();
   }
 
   @Override
@@ -211,8 +201,8 @@ abstract class AbstractElasticIndex<K, V> implements Index<K, V> {
 
   protected abstract String getId(V v);
 
-  protected String getMappingsForSingleType(String candidateType, MappingProperties properties) {
-    return getMappingsFor(client.adapter().getType(candidateType), properties);
+  protected String getMappingsForSingleType(MappingProperties properties) {
+    return getMappingsFor(client.adapter().getType(), properties);
   }
 
   protected String getMappingsFor(String type, MappingProperties properties) {
@@ -228,8 +218,8 @@ abstract class AbstractElasticIndex<K, V> implements Index<K, V> {
     return gson.toJson(mappings);
   }
 
-  protected String delete(String type, K id) {
-    return new DeleteRequest(id.toString(), indexName, type, client.adapter()).toString();
+  protected String getDeleteRequest(K id) {
+    return new DeleteRequest(id.toString(), indexName).toString();
   }
 
   protected abstract V fromDocument(JsonObject doc, Set<String> fields);
diff --git a/java/com/google/gerrit/elasticsearch/ElasticAccountIndex.java b/java/com/google/gerrit/elasticsearch/ElasticAccountIndex.java
index d0b70ae6bd..7f05817723 100644
--- a/java/com/google/gerrit/elasticsearch/ElasticAccountIndex.java
+++ b/java/com/google/gerrit/elasticsearch/ElasticAccountIndex.java
@@ -74,9 +74,7 @@ public class ElasticAccountIndex extends AbstractElasticIndex<Account.Id, Accoun
 
   @Override
   public void replace(AccountState as) throws IOException {
-    BulkRequest bulk =
-        new IndexRequest(getId(as), indexName, type, client.adapter())
-            .add(new UpdateRequest<>(schema, as));
+    BulkRequest bulk = new IndexRequest(getId(as), indexName).add(new UpdateRequest<>(schema, as));
 
     String uri = getURI(type, BULK);
     Response response = postRequest(uri, bulk, getRefreshParam());
@@ -98,12 +96,12 @@ public class ElasticAccountIndex extends AbstractElasticIndex<Account.Id, Accoun
 
   @Override
   protected String getDeleteActions(Account.Id a) {
-    return delete(type, a);
+    return getDeleteRequest(a);
   }
 
   @Override
   protected String getMappings() {
-    return getMappingsForSingleType(ACCOUNTS, mapping.accounts);
+    return getMappingsForSingleType(mapping.accounts);
   }
 
   @Override
diff --git a/java/com/google/gerrit/elasticsearch/ElasticChangeIndex.java b/java/com/google/gerrit/elasticsearch/ElasticChangeIndex.java
index f64896f56f..6086b2d75d 100644
--- a/java/com/google/gerrit/elasticsearch/ElasticChangeIndex.java
+++ b/java/com/google/gerrit/elasticsearch/ElasticChangeIndex.java
@@ -24,7 +24,6 @@ import static java.util.Objects.requireNonNull;
 
 import com.google.common.collect.FluentIterable;
 import com.google.common.collect.ImmutableListMultimap;
-import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.ListMultimap;
 import com.google.common.collect.Lists;
@@ -32,7 +31,6 @@ import com.google.common.collect.MultimapBuilder;
 import com.google.common.collect.Sets;
 import com.google.gerrit.elasticsearch.ElasticMapping.MappingProperties;
 import com.google.gerrit.elasticsearch.bulk.BulkRequest;
-import com.google.gerrit.elasticsearch.bulk.DeleteRequest;
 import com.google.gerrit.elasticsearch.bulk.IndexRequest;
 import com.google.gerrit.elasticsearch.bulk.UpdateRequest;
 import com.google.gerrit.index.QueryOptions;
@@ -42,7 +40,6 @@ import com.google.gerrit.index.query.Predicate;
 import com.google.gerrit.index.query.QueryParseException;
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.Change;
-import com.google.gerrit.reviewdb.client.Change.Id;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.ReviewerByEmailSet;
@@ -58,7 +55,6 @@ import com.google.gerrit.server.query.change.ChangeData;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
-import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
 import com.google.inject.Provider;
 import com.google.inject.assistedinject.Assisted;
@@ -112,28 +108,7 @@ class ElasticChangeIndex extends AbstractElasticIndex<Change.Id, ChangeData>
 
   @Override
   public void replace(ChangeData cd) throws IOException {
-    String deleteIndex;
-    String insertIndex;
-
-    try {
-      if (cd.change().getStatus().isOpen()) {
-        insertIndex = OPEN_CHANGES;
-        deleteIndex = CLOSED_CHANGES;
-      } else {
-        insertIndex = CLOSED_CHANGES;
-        deleteIndex = OPEN_CHANGES;
-      }
-    } catch (OrmException e) {
-      throw new IOException(e);
-    }
-
-    ElasticQueryAdapter adapter = client.adapter();
-    BulkRequest bulk =
-        new IndexRequest(getId(cd), indexName, adapter.getType(insertIndex), adapter)
-            .add(new UpdateRequest<>(schema, cd));
-    if (adapter.deleteToReplace()) {
-      bulk.add(new DeleteRequest(cd.getId().toString(), indexName, deleteIndex, adapter));
-    }
+    BulkRequest bulk = new IndexRequest(getId(cd), indexName).add(new UpdateRequest<>(schema, cd));
 
     String uri = getURI(type, BULK);
     Response response = postRequest(uri, bulk, getRefreshParam());
@@ -185,19 +160,13 @@ class ElasticChangeIndex extends AbstractElasticIndex<Change.Id, ChangeData>
   }
 
   @Override
-  protected String getDeleteActions(Id c) {
-    if (!client.adapter().useV5Type()) {
-      return delete(client.adapter().getType(), c);
-    }
-    return delete(OPEN_CHANGES, c) + delete(CLOSED_CHANGES, c);
+  protected String getDeleteActions(Change.Id c) {
+    return getDeleteRequest(c);
   }
 
   @Override
   protected String getMappings() {
-    if (!client.adapter().useV5Type()) {
-      return getMappingsFor(client.adapter().getType(), mapping.changes);
-    }
-    return gson.toJson(ImmutableMap.of(MAPPINGS, mapping));
+    return getMappingsFor(client.adapter().getType(), mapping.changes);
   }
 
   @Override
diff --git a/java/com/google/gerrit/elasticsearch/ElasticGroupIndex.java b/java/com/google/gerrit/elasticsearch/ElasticGroupIndex.java
index e74f2084fa..2c10a2c766 100644
--- a/java/com/google/gerrit/elasticsearch/ElasticGroupIndex.java
+++ b/java/com/google/gerrit/elasticsearch/ElasticGroupIndex.java
@@ -73,8 +73,7 @@ public class ElasticGroupIndex extends AbstractElasticIndex<AccountGroup.UUID, I
   @Override
   public void replace(InternalGroup group) throws IOException {
     BulkRequest bulk =
-        new IndexRequest(getId(group), indexName, type, client.adapter())
-            .add(new UpdateRequest<>(schema, group));
+        new IndexRequest(getId(group), indexName).add(new UpdateRequest<>(schema, group));
 
     String uri = getURI(type, BULK);
     Response response = postRequest(uri, bulk, getRefreshParam());
@@ -96,12 +95,12 @@ public class ElasticGroupIndex extends AbstractElasticIndex<AccountGroup.UUID, I
 
   @Override
   protected String getDeleteActions(AccountGroup.UUID g) {
-    return delete(type, g);
+    return getDeleteRequest(g);
   }
 
   @Override
   protected String getMappings() {
-    return getMappingsForSingleType(GROUPS, mapping.groups);
+    return getMappingsForSingleType(mapping.groups);
   }
 
   @Override
diff --git a/java/com/google/gerrit/elasticsearch/ElasticProjectIndex.java b/java/com/google/gerrit/elasticsearch/ElasticProjectIndex.java
index 8510559791..d8c53ebbe3 100644
--- a/java/com/google/gerrit/elasticsearch/ElasticProjectIndex.java
+++ b/java/com/google/gerrit/elasticsearch/ElasticProjectIndex.java
@@ -73,7 +73,7 @@ public class ElasticProjectIndex extends AbstractElasticIndex<Project.NameKey, P
   @Override
   public void replace(ProjectData projectState) throws IOException {
     BulkRequest bulk =
-        new IndexRequest(projectState.getProject().getName(), indexName, type, client.adapter())
+        new IndexRequest(projectState.getProject().getName(), indexName)
             .add(new UpdateRequest<>(schema, projectState));
 
     String uri = getURI(type, BULK);
@@ -96,12 +96,12 @@ public class ElasticProjectIndex extends AbstractElasticIndex<Project.NameKey, P
 
   @Override
   protected String getDeleteActions(Project.NameKey nameKey) {
-    return delete(type, nameKey);
+    return getDeleteRequest(nameKey);
   }
 
   @Override
   protected String getMappings() {
-    return getMappingsForSingleType(PROJECTS, mapping.projects);
+    return getMappingsForSingleType(mapping.projects);
   }
 
   @Override
diff --git a/java/com/google/gerrit/elasticsearch/ElasticQueryAdapter.java b/java/com/google/gerrit/elasticsearch/ElasticQueryAdapter.java
index 72c52b0c86..7233682665 100644
--- a/java/com/google/gerrit/elasticsearch/ElasticQueryAdapter.java
+++ b/java/com/google/gerrit/elasticsearch/ElasticQueryAdapter.java
@@ -16,15 +16,12 @@ package com.google.gerrit.elasticsearch;
 
 import static com.google.gerrit.elasticsearch.ElasticVersion.V6_7;
 
-import com.google.gson.JsonObject;
-
 public class ElasticQueryAdapter {
   static final String V6_TYPE = "_doc";
 
   private static final String INCLUDE_TYPE = "include_type_name=true";
   private static final String INDICES = "?allow_no_indices=false";
 
-  private final boolean useV5Type;
   private final boolean useV6Type;
   private final boolean omitType;
   private final int defaultNumberOfShards;
@@ -39,7 +36,6 @@ public class ElasticQueryAdapter {
   private final String includeTypeNameParam;
 
   ElasticQueryAdapter(ElasticVersion version) {
-    this.useV5Type = !version.isV6OrLater();
     this.useV6Type = version.isV6();
     this.omitType = version.isV7OrLater();
     this.defaultNumberOfShards = version.isV7OrLater() ? 1 : 5;
@@ -54,12 +50,6 @@ public class ElasticQueryAdapter {
     this.includeTypeNameParam = version.isAtLeastMinorVersion(V6_7) ? "?" + INCLUDE_TYPE : "";
   }
 
-  public void setType(JsonObject properties, String type) {
-    if (useV5Type) {
-      properties.addProperty("_type", type);
-    }
-  }
-
   public String searchFilteringName() {
     return searchFilteringName;
   }
@@ -84,14 +74,6 @@ public class ElasticQueryAdapter {
     return rawFieldsKey;
   }
 
-  boolean deleteToReplace() {
-    return useV5Type;
-  }
-
-  boolean useV5Type() {
-    return useV5Type;
-  }
-
   boolean useV6Type() {
     return useV6Type;
   }
@@ -105,14 +87,7 @@ public class ElasticQueryAdapter {
   }
 
   String getType() {
-    return getType("");
-  }
-
-  String getType(String type) {
-    if (useV6Type()) {
-      return V6_TYPE;
-    }
-    return useV5Type() ? type : "";
+    return useV6Type() ? V6_TYPE : "";
   }
 
   String getVersionDiscoveryUrl(String name) {
diff --git a/java/com/google/gerrit/elasticsearch/ElasticVersion.java b/java/com/google/gerrit/elasticsearch/ElasticVersion.java
index 6f4ade2dd6..2d023cf251 100644
--- a/java/com/google/gerrit/elasticsearch/ElasticVersion.java
+++ b/java/com/google/gerrit/elasticsearch/ElasticVersion.java
@@ -18,7 +18,6 @@ import com.google.common.base.Joiner;
 import java.util.regex.Pattern;
 
 public enum ElasticVersion {
-  V5_6("5.6.*"),
   V6_2("6.2.*"),
   V6_3("6.3.*"),
   V6_4("6.4.*"),
diff --git a/java/com/google/gerrit/elasticsearch/bulk/ActionRequest.java b/java/com/google/gerrit/elasticsearch/bulk/ActionRequest.java
index 7392d09a20..16b821ca41 100644
--- a/java/com/google/gerrit/elasticsearch/bulk/ActionRequest.java
+++ b/java/com/google/gerrit/elasticsearch/bulk/ActionRequest.java
@@ -14,7 +14,6 @@
 
 package com.google.gerrit.elasticsearch.bulk;
 
-import com.google.gerrit.elasticsearch.ElasticQueryAdapter;
 import com.google.gson.JsonObject;
 
 abstract class ActionRequest extends BulkRequest {
@@ -22,16 +21,11 @@ abstract class ActionRequest extends BulkRequest {
   private final String action;
   private final String id;
   private final String index;
-  private final String type;
-  private final ElasticQueryAdapter adapter;
 
-  protected ActionRequest(
-      String action, String id, String index, String type, ElasticQueryAdapter adapter) {
+  protected ActionRequest(String action, String id, String index) {
     this.action = action;
     this.id = id;
     this.index = index;
-    this.type = type;
-    this.adapter = adapter;
   }
 
   @Override
@@ -39,7 +33,6 @@ abstract class ActionRequest extends BulkRequest {
     JsonObject properties = new JsonObject();
     properties.addProperty("_id", id);
     properties.addProperty("_index", index);
-    adapter.setType(properties, type);
 
     JsonObject jsonAction = new JsonObject();
     jsonAction.add(action, properties);
diff --git a/java/com/google/gerrit/elasticsearch/bulk/DeleteRequest.java b/java/com/google/gerrit/elasticsearch/bulk/DeleteRequest.java
index 570d5a05fe..6451b0fcef 100644
--- a/java/com/google/gerrit/elasticsearch/bulk/DeleteRequest.java
+++ b/java/com/google/gerrit/elasticsearch/bulk/DeleteRequest.java
@@ -14,11 +14,9 @@
 
 package com.google.gerrit.elasticsearch.bulk;
 
-import com.google.gerrit.elasticsearch.ElasticQueryAdapter;
-
 public class DeleteRequest extends ActionRequest {
 
-  public DeleteRequest(String id, String index, String type, ElasticQueryAdapter adapter) {
-    super("delete", id, index, type, adapter);
+  public DeleteRequest(String id, String index) {
+    super("delete", id, index);
   }
 }
diff --git a/java/com/google/gerrit/elasticsearch/bulk/IndexRequest.java b/java/com/google/gerrit/elasticsearch/bulk/IndexRequest.java
index c571a0ed57..d90b80faca 100644
--- a/java/com/google/gerrit/elasticsearch/bulk/IndexRequest.java
+++ b/java/com/google/gerrit/elasticsearch/bulk/IndexRequest.java
@@ -14,11 +14,9 @@
 
 package com.google.gerrit.elasticsearch.bulk;
 
-import com.google.gerrit.elasticsearch.ElasticQueryAdapter;
-
 public class IndexRequest extends ActionRequest {
 
-  public IndexRequest(String id, String index, String type, ElasticQueryAdapter adapter) {
-    super("index", id, index, type, adapter);
+  public IndexRequest(String id, String index) {
+    super("index", id, index);
   }
 }
diff --git a/javatests/com/google/gerrit/acceptance/pgm/ElasticReindexIT.java b/javatests/com/google/gerrit/acceptance/pgm/ElasticReindexIT.java
index 181f6f064a..f8e64f6c9b 100644
--- a/javatests/com/google/gerrit/acceptance/pgm/ElasticReindexIT.java
+++ b/javatests/com/google/gerrit/acceptance/pgm/ElasticReindexIT.java
@@ -26,11 +26,6 @@ import org.junit.Before;
 public class ElasticReindexIT extends AbstractReindexTests {
 
   @ConfigSuite.Default
-  public static Config elasticsearchV5() {
-    return getConfig(ElasticVersion.V5_6);
-  }
-
-  @ConfigSuite.Config
   public static Config elasticsearchV6() {
     return getConfig(ElasticVersion.V6_8);
   }
diff --git a/javatests/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java b/javatests/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java
index 0d55d7a718..e0e8bb4303 100644
--- a/javatests/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java
+++ b/javatests/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java
@@ -25,11 +25,6 @@ import org.eclipse.jgit.lib.Config;
 public class ElasticIndexIT extends AbstractIndexTests {
 
   @ConfigSuite.Default
-  public static Config elasticsearchV5() {
-    return getConfig(ElasticVersion.V5_6);
-  }
-
-  @ConfigSuite.Config
   public static Config elasticsearchV6() {
     return getConfig(ElasticVersion.V6_8);
   }
diff --git a/javatests/com/google/gerrit/elasticsearch/BUILD b/javatests/com/google/gerrit/elasticsearch/BUILD
index 8bc738f9b0..b6575450e2 100644
--- a/javatests/com/google/gerrit/elasticsearch/BUILD
+++ b/javatests/com/google/gerrit/elasticsearch/BUILD
@@ -48,8 +48,6 @@ TYPES = [
 
 SUFFIX = "sTest.java"
 
-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}
@@ -60,14 +58,6 @@ ELASTICSEARCH_TAGS = [
     "exclusive",
 ]
 
-[junit_tests(
-    name = "elasticsearch_query_%ss_test_V5" % name,
-    size = "large",
-    srcs = [src],
-    tags = ELASTICSEARCH_TAGS,
-    deps = ELASTICSEARCH_DEPS + [QUERY_TESTS_DEP % name],
-) for name, src in ELASTICSEARCH_TESTS_V5.items()]
-
 [junit_tests(
     name = "elasticsearch_query_%ss_test_V6" % name,
     size = "large",
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticContainer.java b/javatests/com/google/gerrit/elasticsearch/ElasticContainer.java
index 9d0319cd6e..879c7c5c3c 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticContainer.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticContainer.java
@@ -38,8 +38,6 @@ public class ElasticContainer extends ElasticsearchContainer {
 
   private static String getImageName(ElasticVersion version) {
     switch (version) {
-      case V5_6:
-        return "blacktop/elasticsearch:5.6.16";
       case V6_2:
         return "blacktop/elasticsearch:6.2.4";
       case V6_3:
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticTestUtils.java b/javatests/com/google/gerrit/elasticsearch/ElasticTestUtils.java
index 2d99cbf4af..a976aae495 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticTestUtils.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticTestUtils.java
@@ -25,22 +25,13 @@ import java.util.UUID;
 import org.eclipse.jgit.lib.Config;
 
 public final class ElasticTestUtils {
-  public static void configure(
-      Config config, ElasticContainer container, String prefix, ElasticVersion version) {
+  public static void configure(Config config, ElasticContainer container, String prefix) {
     String hostname = container.getHttpHost().getHostName();
     int port = container.getHttpHost().getPort();
     config.setEnum("index", null, "type", IndexType.ELASTICSEARCH);
     config.setString("elasticsearch", null, "server", "http://" + hostname + ":" + port);
     config.setString("elasticsearch", null, "prefix", prefix);
     config.setInt("index", null, "maxLimit", 10000);
-    String password = version == ElasticVersion.V5_6 ? "changeme" : null;
-    if (password != null) {
-      config.setString("elasticsearch", null, "password", password);
-    }
-  }
-
-  public static void configure(Config config, ElasticContainer container, String prefix) {
-    configure(config, container, prefix, null);
   }
 
   public static void createAllIndexes(Injector injector) throws IOException {
@@ -55,7 +46,7 @@ public final class ElasticTestUtils {
     ElasticContainer container = ElasticContainer.createAndStart(version);
     String indicesPrefix = UUID.randomUUID().toString();
     Config cfg = new Config();
-    configure(cfg, container, indicesPrefix, version);
+    configure(cfg, container, indicesPrefix);
     return cfg;
   }
 
diff --git a/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryAccountsTest.java b/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryAccountsTest.java
deleted file mode 100644
index cb192cdc65..0000000000
--- a/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryAccountsTest.java
+++ /dev/null
@@ -1,64 +0,0 @@
-// 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.elasticsearch;
-
-import com.google.gerrit.server.query.account.AbstractQueryAccountsTest;
-import com.google.gerrit.testing.ConfigSuite;
-import com.google.gerrit.testing.InMemoryModule;
-import com.google.gerrit.testing.IndexConfig;
-import com.google.inject.Guice;
-import com.google.inject.Injector;
-import org.eclipse.jgit.lib.Config;
-import org.junit.AfterClass;
-import org.junit.BeforeClass;
-
-public class ElasticV5QueryAccountsTest extends AbstractQueryAccountsTest {
-  @ConfigSuite.Default
-  public static Config defaultConfig() {
-    return IndexConfig.createForElasticsearch();
-  }
-
-  private static ElasticContainer container;
-
-  @BeforeClass
-  public static void startIndexService() {
-    if (container == null) {
-      // Only start Elasticsearch once
-      container = ElasticContainer.createAndStart(ElasticVersion.V5_6);
-    }
-  }
-
-  @AfterClass
-  public static void stopElasticsearchServer() {
-    if (container != null) {
-      container.stop();
-    }
-  }
-
-  @Override
-  protected void initAfterLifecycleStart() throws Exception {
-    super.initAfterLifecycleStart();
-    ElasticTestUtils.createAllIndexes(injector);
-  }
-
-  @Override
-  protected Injector createInjector() {
-    Config elasticsearchConfig = new Config(config);
-    InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = getSanitizedMethodName();
-    ElasticTestUtils.configure(elasticsearchConfig, container, 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
deleted file mode 100644
index c4d0c18840..0000000000
--- a/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryChangesTest.java
+++ /dev/null
@@ -1,64 +0,0 @@
-// 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.elasticsearch;
-
-import com.google.gerrit.server.query.change.AbstractQueryChangesTest;
-import com.google.gerrit.testing.ConfigSuite;
-import com.google.gerrit.testing.InMemoryModule;
-import com.google.gerrit.testing.IndexConfig;
-import com.google.inject.Guice;
-import com.google.inject.Injector;
-import org.eclipse.jgit.lib.Config;
-import org.junit.AfterClass;
-import org.junit.BeforeClass;
-
-public class ElasticV5QueryChangesTest extends AbstractQueryChangesTest {
-  @ConfigSuite.Default
-  public static Config defaultConfig() {
-    return IndexConfig.createForElasticsearch();
-  }
-
-  private static ElasticContainer container;
-
-  @BeforeClass
-  public static void startIndexService() {
-    if (container == null) {
-      // Only start Elasticsearch once
-      container = ElasticContainer.createAndStart(ElasticVersion.V5_6);
-    }
-  }
-
-  @AfterClass
-  public static void stopElasticsearchServer() {
-    if (container != null) {
-      container.stop();
-    }
-  }
-
-  @Override
-  protected void initAfterLifecycleStart() throws Exception {
-    super.initAfterLifecycleStart();
-    ElasticTestUtils.createAllIndexes(injector);
-  }
-
-  @Override
-  protected Injector createInjector() {
-    Config elasticsearchConfig = new Config(config);
-    InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = getSanitizedMethodName();
-    ElasticTestUtils.configure(elasticsearchConfig, container, 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
deleted file mode 100644
index f1fb60c758..0000000000
--- a/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryGroupsTest.java
+++ /dev/null
@@ -1,64 +0,0 @@
-// 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.elasticsearch;
-
-import com.google.gerrit.server.query.group.AbstractQueryGroupsTest;
-import com.google.gerrit.testing.ConfigSuite;
-import com.google.gerrit.testing.InMemoryModule;
-import com.google.gerrit.testing.IndexConfig;
-import com.google.inject.Guice;
-import com.google.inject.Injector;
-import org.eclipse.jgit.lib.Config;
-import org.junit.AfterClass;
-import org.junit.BeforeClass;
-
-public class ElasticV5QueryGroupsTest extends AbstractQueryGroupsTest {
-  @ConfigSuite.Default
-  public static Config defaultConfig() {
-    return IndexConfig.createForElasticsearch();
-  }
-
-  private static ElasticContainer container;
-
-  @BeforeClass
-  public static void startIndexService() {
-    if (container == null) {
-      // Only start Elasticsearch once
-      container = ElasticContainer.createAndStart(ElasticVersion.V5_6);
-    }
-  }
-
-  @AfterClass
-  public static void stopElasticsearchServer() {
-    if (container != null) {
-      container.stop();
-    }
-  }
-
-  @Override
-  protected void initAfterLifecycleStart() throws Exception {
-    super.initAfterLifecycleStart();
-    ElasticTestUtils.createAllIndexes(injector);
-  }
-
-  @Override
-  protected Injector createInjector() {
-    Config elasticsearchConfig = new Config(config);
-    InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = getSanitizedMethodName();
-    ElasticTestUtils.configure(elasticsearchConfig, container, 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
deleted file mode 100644
index 4dd0e9895a..0000000000
--- a/javatests/com/google/gerrit/elasticsearch/ElasticV5QueryProjectsTest.java
+++ /dev/null
@@ -1,64 +0,0 @@
-// 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.elasticsearch;
-
-import com.google.gerrit.server.query.project.AbstractQueryProjectsTest;
-import com.google.gerrit.testing.ConfigSuite;
-import com.google.gerrit.testing.InMemoryModule;
-import com.google.gerrit.testing.IndexConfig;
-import com.google.inject.Guice;
-import com.google.inject.Injector;
-import org.eclipse.jgit.lib.Config;
-import org.junit.AfterClass;
-import org.junit.BeforeClass;
-
-public class ElasticV5QueryProjectsTest extends AbstractQueryProjectsTest {
-  @ConfigSuite.Default
-  public static Config defaultConfig() {
-    return IndexConfig.createForElasticsearch();
-  }
-
-  private static ElasticContainer container;
-
-  @BeforeClass
-  public static void startIndexService() {
-    if (container == null) {
-      // Only start Elasticsearch once
-      container = ElasticContainer.createAndStart(ElasticVersion.V5_6);
-    }
-  }
-
-  @AfterClass
-  public static void stopElasticsearchServer() {
-    if (container != null) {
-      container.stop();
-    }
-  }
-
-  @Override
-  protected void initAfterLifecycleStart() throws Exception {
-    super.initAfterLifecycleStart();
-    ElasticTestUtils.createAllIndexes(injector);
-  }
-
-  @Override
-  protected Injector createInjector() {
-    Config elasticsearchConfig = new Config(config);
-    InMemoryModule.setDefaults(elasticsearchConfig);
-    String indicesPrefix = getSanitizedMethodName();
-    ElasticTestUtils.configure(elasticsearchConfig, container, indicesPrefix, ElasticVersion.V5_6);
-    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 9786e373c0..a338371fa7 100644
--- a/javatests/com/google/gerrit/elasticsearch/ElasticVersionTest.java
+++ b/javatests/com/google/gerrit/elasticsearch/ElasticVersionTest.java
@@ -25,9 +25,6 @@ public class ElasticVersionTest {
 
   @Test
   public void supportedVersion() throws Exception {
-    assertThat(ElasticVersion.forVersion("5.6.0")).isEqualTo(ElasticVersion.V5_6);
-    assertThat(ElasticVersion.forVersion("5.6.11")).isEqualTo(ElasticVersion.V5_6);
-
     assertThat(ElasticVersion.forVersion("6.2.0")).isEqualTo(ElasticVersion.V6_2);
     assertThat(ElasticVersion.forVersion("6.2.4")).isEqualTo(ElasticVersion.V6_2);
 
@@ -81,7 +78,6 @@ public class ElasticVersionTest {
 
   @Test
   public void atLeastMinorVersion() throws Exception {
-    assertThat(ElasticVersion.V5_6.isAtLeastMinorVersion(ElasticVersion.V6_7)).isFalse();
     assertThat(ElasticVersion.V6_2.isAtLeastMinorVersion(ElasticVersion.V6_7)).isFalse();
     assertThat(ElasticVersion.V6_3.isAtLeastMinorVersion(ElasticVersion.V6_7)).isFalse();
     assertThat(ElasticVersion.V6_4.isAtLeastMinorVersion(ElasticVersion.V6_7)).isFalse();
@@ -100,7 +96,6 @@ public class ElasticVersionTest {
 
   @Test
   public void version6OrLater() throws Exception {
-    assertThat(ElasticVersion.V5_6.isV6OrLater()).isFalse();
     assertThat(ElasticVersion.V6_2.isV6OrLater()).isTrue();
     assertThat(ElasticVersion.V6_3.isV6OrLater()).isTrue();
     assertThat(ElasticVersion.V6_4.isV6OrLater()).isTrue();
@@ -119,7 +114,6 @@ public class ElasticVersionTest {
 
   @Test
   public void version7OrLater() 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();