forked from elastic/elasticsearch
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Ensure pending merges are updated on segment flushes
Due to the default of `async_merge` to `true` we never run the merge policy on a segment flush which prevented the pending merges from being updated and that caused actual pending merges not to contribute to the merge decision. This commit also removes the `index.async.merge` setting is actually misleading since we take care of merges not being excecuted on the indexing threads on a different level (the merge scheduler) since 1.1. This commit also adds an additional check when to run a refresh since soely relying on the dirty flag might leave merges un-refreshed which can cause search slowdowns and higher memory consumption. Closes elastic#5779
- Loading branch information
Showing
7 changed files
with
132 additions
and
96 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
94 changes: 94 additions & 0 deletions
94
src/test/java/org/elasticsearch/index/engine/internal/InternalEngineMergeTests.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
| package org.elasticsearch.index.engine.internal; | ||
|
|
||
| import com.carrotsearch.randomizedtesting.annotations.Nightly; | ||
| import com.carrotsearch.randomizedtesting.annotations.Seed; | ||
| import com.google.common.base.Predicate; | ||
| import org.apache.lucene.index.LogByteSizeMergePolicy; | ||
| import org.apache.lucene.util.LuceneTestCase; | ||
| import org.elasticsearch.action.admin.indices.stats.IndicesStatsResponse; | ||
| import org.elasticsearch.action.bulk.BulkRequestBuilder; | ||
| import org.elasticsearch.action.bulk.BulkResponse; | ||
| import org.elasticsearch.action.index.IndexRequestBuilder; | ||
| import org.elasticsearch.client.Requests; | ||
| import org.elasticsearch.cluster.metadata.IndexMetaData; | ||
| import org.elasticsearch.common.settings.ImmutableSettings; | ||
| import org.elasticsearch.index.merge.policy.LogDocMergePolicyProvider; | ||
| import org.elasticsearch.test.ElasticsearchIntegrationTest; | ||
| import org.hamcrest.Matchers; | ||
| import org.junit.Test; | ||
|
|
||
| import java.io.IOException; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.concurrent.ExecutionException; | ||
|
|
||
| import static org.elasticsearch.common.xcontent.XContentFactory.jsonBuilder; | ||
| import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertAcked; | ||
| import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertNoFailures; | ||
|
|
||
| /** | ||
| */ | ||
| @ElasticsearchIntegrationTest.ClusterScope(numNodes = 1, scope = ElasticsearchIntegrationTest.Scope.SUITE) | ||
| public class InternalEngineMergeTests extends ElasticsearchIntegrationTest { | ||
|
|
||
| @Test | ||
| @LuceneTestCase.Slow | ||
| public void testMergesHappening() throws InterruptedException, IOException, ExecutionException { | ||
| final int numOfShards = 5; | ||
| // some settings to keep num segments low | ||
| assertAcked(prepareCreate("test").setSettings(ImmutableSettings.builder() | ||
| .put(IndexMetaData.SETTING_NUMBER_OF_SHARDS, numOfShards) | ||
| .put(LogDocMergePolicyProvider.MIN_MERGE_DOCS_KEY, 10) | ||
| .put(LogDocMergePolicyProvider.MERGE_FACTORY_KEY, 5) | ||
| .put(LogByteSizeMergePolicy.DEFAULT_MIN_MERGE_MB, 0.5) | ||
| .build())); | ||
| long id = 0; | ||
| final int rounds = scaledRandomIntBetween(50, 300); | ||
| logger.info("Starting rounds [{}] ", rounds); | ||
| for (int i = 0; i < rounds; ++i) { | ||
| final int numDocs = scaledRandomIntBetween(100, 1000); | ||
| BulkRequestBuilder request = client().prepareBulk(); | ||
| for (int j = 0; j < numDocs; ++j) { | ||
| request.add(Requests.indexRequest("test").type("type1").id(Long.toString(id++)).source(jsonBuilder().startObject().field("l", randomLong()).endObject())); | ||
| } | ||
| BulkResponse response = request.execute().actionGet(); | ||
| refresh(); | ||
| assertNoFailures(response); | ||
| IndicesStatsResponse stats = client().admin().indices().prepareStats("test").setSegments(true).setMerge(true).get(); | ||
| logger.info("index round [{}] - segments {}, total merges {}, current merge {}", i, stats.getPrimaries().getSegments().getCount(), stats.getPrimaries().getMerge().getTotal(), stats.getPrimaries().getMerge().getCurrent()); | ||
| } | ||
| awaitBusy(new Predicate<Object>() { | ||
| @Override | ||
| public boolean apply(Object input) { | ||
| IndicesStatsResponse stats = client().admin().indices().prepareStats().setSegments(true).setMerge(true).get(); | ||
| logger.info("numshards {}, segments {}, total merges {}, current merge {}", numOfShards, stats.getPrimaries().getSegments().getCount(), stats.getPrimaries().getMerge().getTotal(), stats.getPrimaries().getMerge().getCurrent()); | ||
| long current = stats.getPrimaries().getMerge().getCurrent(); | ||
| long count = stats.getPrimaries().getSegments().getCount(); | ||
| return count < 50 && current == 0; | ||
| } | ||
| }); | ||
| IndicesStatsResponse stats = client().admin().indices().prepareStats().setSegments(true).setMerge(true).get(); | ||
| logger.info("numshards {}, segments {}, total merges {}, current merge {}", numOfShards, stats.getPrimaries().getSegments().getCount(), stats.getPrimaries().getMerge().getTotal(), stats.getPrimaries().getMerge().getCurrent()); | ||
| long count = stats.getPrimaries().getSegments().getCount(); | ||
| assertThat(count, Matchers.lessThanOrEqualTo(50l)); | ||
| } | ||
|
|
||
| } |
Oops, something went wrong.