jihoonson commented on a change in pull request #10082: URL: https://github.com/apache/druid/pull/10082#discussion_r446480325
########## File path: server/src/test/java/org/apache/druid/query/RetryQueryRunnerTest.java ########## @@ -0,0 +1,326 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF 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.apache.druid.query; + +import com.fasterxml.jackson.databind.ObjectMapper; +import com.google.common.collect.ImmutableList; +import com.google.common.collect.ImmutableMap; +import org.apache.druid.client.CachingClusteredClient; +import org.apache.druid.client.DirectDruidClient; +import org.apache.druid.client.DruidServer; +import org.apache.druid.client.SimpleServerView; +import org.apache.druid.client.TestHttpClient; +import org.apache.druid.client.TestHttpClient.SimpleServerManager; +import org.apache.druid.client.cache.CacheConfig; +import org.apache.druid.client.cache.CachePopulatorStats; +import org.apache.druid.client.cache.ForegroundCachePopulator; +import org.apache.druid.client.cache.MapCache; +import org.apache.druid.guice.http.DruidHttpClientConfig; +import org.apache.druid.jackson.DefaultObjectMapper; +import org.apache.druid.java.util.common.DateTimes; +import org.apache.druid.java.util.common.Pair; +import org.apache.druid.java.util.common.granularity.Granularities; +import org.apache.druid.java.util.common.guava.Sequence; +import org.apache.druid.java.util.common.io.Closer; +import org.apache.druid.query.aggregation.CountAggregatorFactory; +import org.apache.druid.query.timeseries.TimeseriesQuery; +import org.apache.druid.query.timeseries.TimeseriesResultValue; +import org.apache.druid.segment.QueryableIndex; +import org.apache.druid.segment.SegmentMissingException; +import org.apache.druid.segment.generator.GeneratorBasicSchemas; +import org.apache.druid.segment.generator.GeneratorSchemaInfo; +import org.apache.druid.segment.generator.SegmentGenerator; +import org.apache.druid.server.QueryStackTests; +import org.apache.druid.timeline.DataSegment; +import org.apache.druid.timeline.SegmentId; +import org.apache.druid.timeline.partition.NumberedShardSpec; +import org.joda.time.Interval; +import org.junit.After; +import org.junit.AfterClass; +import org.junit.Assert; +import org.junit.Before; +import org.junit.Rule; +import org.junit.Test; +import org.junit.rules.ExpectedException; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.ForkJoinPool; +import java.util.stream.Collectors; +import java.util.stream.IntStream; + +public class RetryQueryRunnerTest +{ + private static final Closer CLOSER = Closer.create(); + private static final String DATASOURCE = "datasource"; + private static final GeneratorSchemaInfo SCHEMA_INFO = GeneratorBasicSchemas.SCHEMA_MAP.get("basic"); + private static final boolean USE_PARALLEL_MERGE_POOL_CONFIGURED = false; + + @Rule + public ExpectedException expectedException = ExpectedException.none(); + + private final ObjectMapper objectMapper = new DefaultObjectMapper(); + private final QueryToolChestWarehouse toolChestWarehouse; + private final QueryRunnerFactoryConglomerate conglomerate; + + private SegmentGenerator segmentGenerator; + private TestHttpClient httpClient; + private SimpleServerView simpleServerView; + private CachingClusteredClient cachingClusteredClient; + private List<DruidServer> servers; + + public RetryQueryRunnerTest() + { + conglomerate = QueryStackTests.createQueryRunnerFactoryConglomerate(CLOSER, USE_PARALLEL_MERGE_POOL_CONFIGURED); + + toolChestWarehouse = new QueryToolChestWarehouse() + { + @Override + public <T, QueryType extends Query<T>> QueryToolChest<T, QueryType> getToolChest(final QueryType query) + { + return conglomerate.findFactory(query).getToolchest(); + } + }; + } + + @AfterClass + public static void tearDownClass() throws IOException + { + CLOSER.close(); + } + + @Before + public void setup() + { + segmentGenerator = new SegmentGenerator(); + httpClient = new TestHttpClient(objectMapper); + simpleServerView = new SimpleServerView(toolChestWarehouse, objectMapper, httpClient); + cachingClusteredClient = new CachingClusteredClient( + toolChestWarehouse, + simpleServerView, + MapCache.create(0), + objectMapper, + new ForegroundCachePopulator(objectMapper, new CachePopulatorStats(), 0), + new CacheConfig(), + new DruidHttpClientConfig(), + QueryStackTests.getProcessingConfig(USE_PARALLEL_MERGE_POOL_CONFIGURED), + ForkJoinPool.commonPool(), + QueryStackTests.DEFAULT_NOOP_SCHEDULER + ); + servers = new ArrayList<>(); + } + + @After + public void tearDown() throws IOException + { + segmentGenerator.close(); + } + + private void addServer(DruidServer server, DataSegment dataSegment, QueryableIndex queryableIndex) + { + servers.add(server); + simpleServerView.addServer(server, dataSegment); + httpClient.addServerAndRunner(server, new SimpleServerManager(conglomerate, dataSegment.getId(), queryableIndex)); + } + + @Test + public void testNoRetry() + { + prepareCluster(10); + final TimeseriesQuery query = timeseriesQuery(SCHEMA_INFO.getDataInterval()); + final RetryQueryRunner<Result<TimeseriesResultValue>> queryRunner = createQueryRunner( + newRetryQueryRunnerConfig(1, false), + query + ); + final Sequence<Result<TimeseriesResultValue>> sequence = queryRunner.run(QueryPlus.wrap(query)); + final List<Result<TimeseriesResultValue>> queryResult = sequence.toList(); + Assert.assertEquals(0, queryRunner.getNumTotalRetries()); + Assert.assertFalse(queryResult.isEmpty()); + Assert.assertEquals(expectedTimeseriesResult(10), queryResult); + } + + @Test + public void testRetryForMovedSegment() + { + prepareCluster(10); + final TimeseriesQuery query = timeseriesQuery(SCHEMA_INFO.getDataInterval()); + final RetryQueryRunner<Result<TimeseriesResultValue>> queryRunner = createQueryRunner( + newRetryQueryRunnerConfig(1, true), + query + ); + final Sequence<Result<TimeseriesResultValue>> sequence = queryRunner.run(QueryPlus.wrap(query)); + + // Let's move a segment + dropSegmentFromServerAndAddNewServerForSegment(servers.get(0)); + + final List<Result<TimeseriesResultValue>> queryResult = sequence.toList(); + Assert.assertEquals(1, queryRunner.getNumTotalRetries()); Review comment: Oh, I actually found the response context is not shared between subqueries when inlining them. It is shared in UnionQueryRunner though. I think it makes sense to not share the context when inlining subqueries. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@druid.apache.org For additional commands, e-mail: commits-h...@druid.apache.org
