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Reindex sort never gave a guarantee about the order of documents being indexed into the destination, though it could give a sense of locality of source data. It prevents us from doing resilient reindex and other optimizations and it has therefore been deprecated. Related to elastic#47567
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modules/reindex/src/test/java/org/elasticsearch/index/reindex/ReindexSingleNodeTests.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.index.reindex; | ||
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| import org.elasticsearch.index.query.RangeQueryBuilder; | ||
| import org.elasticsearch.plugins.Plugin; | ||
| import org.elasticsearch.search.sort.SortOrder; | ||
| import org.elasticsearch.test.ESSingleNodeTestCase; | ||
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| import java.util.Arrays; | ||
| import java.util.Collection; | ||
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| import static org.elasticsearch.index.reindex.ReindexTestCase.matcher; | ||
| import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertHitCount; | ||
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| public class ReindexSingleNodeTests extends ESSingleNodeTestCase { | ||
| @Override | ||
| protected Collection<Class<? extends Plugin>> getPlugins() { | ||
| return Arrays.asList(ReindexPlugin.class); | ||
| } | ||
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| public void testDeprecatedSort() { | ||
| int max = between(2, 20); | ||
| for (int i = 0; i < max; i++) { | ||
| client().prepareIndex("source").setId(Integer.toString(i)).setSource("foo", i).get(); | ||
| } | ||
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| client().admin().indices().prepareRefresh("source").get(); | ||
| assertHitCount(client().prepareSearch("source").setSize(0).get(), max); | ||
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| // Copy a subset of the docs sorted | ||
| int subsetSize = randomIntBetween(1, max - 1); | ||
| ReindexRequestBuilder copy = new ReindexRequestBuilder(client(), ReindexAction.INSTANCE) | ||
| .source("source").destination("dest").refresh(true); | ||
| copy.maxDocs(subsetSize); | ||
| copy.request().addSortField("foo", SortOrder.DESC); | ||
| assertThat(copy.get(), matcher().created(subsetSize)); | ||
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| assertHitCount(client().prepareSearch("dest").setSize(0).get(), subsetSize); | ||
| assertHitCount(client().prepareSearch("dest").setQuery(new RangeQueryBuilder("foo").gte(0).lt(max-subsetSize)).get(), 0); | ||
| assertWarnings(Reindexer.SORT_DEPRECATED_MESSAGE); | ||
| } | ||
| } |
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