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* Record Force Merges in live commit data Prerequisite of #52182. Record force merges in the live commit data so two shard states with the same sequence number that differ only in whether or not they have been force merged can be distinguished when creating snapshots.
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server/src/test/java/org/elasticsearch/action/admin/indices/forcemerge/ForceMergeIT.java
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| /* | ||
| * Licensed to Elasticsearch under one or more contributor | ||
| * license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright | ||
| * ownership. Elasticsearch licenses this file to you 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. | ||
| */ | ||
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| package org.elasticsearch.action.admin.indices.forcemerge; | ||
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| import org.elasticsearch.action.admin.indices.flush.FlushResponse; | ||
| import org.elasticsearch.cluster.ClusterState; | ||
| import org.elasticsearch.cluster.metadata.IndexMetaData; | ||
| import org.elasticsearch.cluster.routing.IndexRoutingTable; | ||
| import org.elasticsearch.cluster.routing.IndexShardRoutingTable; | ||
| import org.elasticsearch.common.settings.Settings; | ||
| import org.elasticsearch.index.Index; | ||
| import org.elasticsearch.index.engine.Engine; | ||
| import org.elasticsearch.index.shard.IndexShard; | ||
| import org.elasticsearch.indices.IndicesService; | ||
| import org.elasticsearch.test.ESIntegTestCase; | ||
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| import java.io.IOException; | ||
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| import static org.hamcrest.Matchers.is; | ||
| import static org.hamcrest.Matchers.notNullValue; | ||
| import static org.hamcrest.Matchers.nullValue; | ||
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| public class ForceMergeIT extends ESIntegTestCase { | ||
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| public void testForceMergeUUIDConsistent() throws IOException { | ||
| internalCluster().ensureAtLeastNumDataNodes(2); | ||
| final String index = "test-index"; | ||
| createIndex(index, | ||
| Settings.builder().put(IndexMetaData.SETTING_NUMBER_OF_SHARDS, 1) | ||
| .put(IndexMetaData.SETTING_NUMBER_OF_REPLICAS, 1).build()); | ||
| ensureGreen(index); | ||
| final ClusterState state = clusterService().state(); | ||
| final IndexRoutingTable indexShardRoutingTables = state.routingTable().getIndicesRouting().get(index); | ||
| final IndexShardRoutingTable shardRouting = indexShardRoutingTables.getShards().get(0); | ||
| final String primaryNodeId = shardRouting.primaryShard().currentNodeId(); | ||
| final String replicaNodeId = shardRouting.replicaShards().get(0).currentNodeId(); | ||
| final Index idx = shardRouting.primaryShard().index(); | ||
| final IndicesService primaryIndicesService = | ||
| internalCluster().getInstance(IndicesService.class, state.nodes().get(primaryNodeId).getName()); | ||
| final IndicesService replicaIndicesService = internalCluster().getInstance(IndicesService.class, | ||
| state.nodes().get(replicaNodeId).getName()); | ||
| final IndexShard primary = primaryIndicesService.indexService(idx).getShard(0); | ||
| final IndexShard replica = replicaIndicesService.indexService(idx).getShard(0); | ||
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| assertThat(getForceMergeUUID(primary), nullValue()); | ||
| assertThat(getForceMergeUUID(replica), nullValue()); | ||
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| final ForceMergeResponse forceMergeResponse = | ||
| client().admin().indices().prepareForceMerge(index).setMaxNumSegments(1).get(); | ||
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| assertThat(forceMergeResponse.getFailedShards(), is(0)); | ||
| assertThat(forceMergeResponse.getSuccessfulShards(), is(2)); | ||
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| // Force flush to force a new commit that contains the force flush UUID | ||
| final FlushResponse flushResponse = client().admin().indices().prepareFlush(index).setForce(true).get(); | ||
| assertThat(flushResponse.getFailedShards(), is(0)); | ||
| assertThat(flushResponse.getSuccessfulShards(), is(2)); | ||
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| final String primaryForceMergeUUID = getForceMergeUUID(primary); | ||
| assertThat(primaryForceMergeUUID, notNullValue()); | ||
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| final String replicaForceMergeUUID = getForceMergeUUID(replica); | ||
| assertThat(replicaForceMergeUUID, notNullValue()); | ||
| assertThat(primaryForceMergeUUID, is(replicaForceMergeUUID)); | ||
| } | ||
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| private static String getForceMergeUUID(IndexShard indexShard) throws IOException { | ||
| try (Engine.IndexCommitRef indexCommitRef = indexShard.acquireLastIndexCommit(true)) { | ||
| return indexCommitRef.getIndexCommit().getUserData().get(Engine.FORCE_MERGE_UUID_KEY); | ||
| } | ||
| } | ||
| } |
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