jihoonson commented on a change in pull request #5492: Native parallel batch indexing without shuffle URL: https://github.com/apache/incubator-druid/pull/5492#discussion_r201891856
########## File path: indexing-service/src/main/java/io/druid/indexing/common/task/ParallelIndexSupervisorTask.java ########## @@ -0,0 +1,322 @@ +/* + * Licensed to Metamarkets Group Inc. (Metamarkets) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. Metamarkets 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 io.druid.indexing.common.task; + +import com.fasterxml.jackson.annotation.JacksonInject; +import com.fasterxml.jackson.annotation.JsonCreator; +import com.fasterxml.jackson.annotation.JsonProperty; +import com.google.common.annotations.VisibleForTesting; +import com.google.common.base.Optional; +import io.druid.client.indexing.IndexingServiceClient; +import io.druid.data.input.FiniteFirehoseFactory; +import io.druid.data.input.FirehoseFactory; +import io.druid.indexer.TaskStatus; +import io.druid.indexing.common.TaskLock; +import io.druid.indexing.common.TaskToolbox; +import io.druid.indexing.common.actions.TaskActionClient; +import io.druid.indexing.common.stats.RowIngestionMetersFactory; +import io.druid.indexing.common.task.IndexTask.IndexIngestionSpec; +import io.druid.indexing.common.task.IndexTask.IndexTuningConfig; +import io.druid.java.util.common.IAE; +import io.druid.java.util.common.logger.Logger; +import io.druid.segment.realtime.firehose.ChatHandler; +import io.druid.segment.realtime.firehose.ChatHandlerProvider; +import io.druid.server.security.AuthorizerMapper; +import org.joda.time.Interval; + +import javax.annotation.Nullable; +import java.io.IOException; +import java.util.List; +import java.util.Map; +import java.util.SortedSet; + +/** + * ParallelIndexSupervisorTask is capable of running multiple subTasks for parallel indexing. This is + * applicable if the input {@link FiniteFirehoseFactory} is splittable. While this task is running, it can submit + * multiple child tasks to overlords. This task succeeds only when all its child tasks succeed; otherwise it fails. + * + * @see ParallelIndexTaskRunner + */ +public class ParallelIndexSupervisorTask extends AbstractTask implements ChatHandler +{ + static final String TYPE = "index_parallel"; + + private static final Logger log = new Logger(ParallelIndexSupervisorTask.class); + + private final ParallelIndexIngestionSpec ingestionSchema; + private final FiniteFirehoseFactory<?, ?> baseFirehoseFactory; + private final IndexingServiceClient indexingServiceClient; + private final ChatHandlerProvider chatHandlerProvider; + private final AuthorizerMapper authorizerMapper; + private final RowIngestionMetersFactory rowIngestionMetersFactory; + + private ParallelIndexTaskRunner runner; + + @JsonCreator + public ParallelIndexSupervisorTask( + @JsonProperty("id") String id, + @JsonProperty("resource") TaskResource taskResource, + @JsonProperty("spec") ParallelIndexIngestionSpec ingestionSchema, + @JsonProperty("context") Map<String, Object> context, + @JacksonInject @Nullable IndexingServiceClient indexingServiceClient, // null in overlords + @JacksonInject @Nullable ChatHandlerProvider chatHandlerProvider, // null in overlords + @JacksonInject AuthorizerMapper authorizerMapper, + @JacksonInject RowIngestionMetersFactory rowIngestionMetersFactory + ) + { + super( + getOrMakeId(id, TYPE, ingestionSchema.getDataSchema().getDataSource()), + null, + taskResource, + ingestionSchema.getDataSchema().getDataSource(), + context + ); + + this.ingestionSchema = ingestionSchema; + + final FirehoseFactory firehoseFactory = ingestionSchema.getIOConfig().getFirehoseFactory(); + if (!(firehoseFactory instanceof FiniteFirehoseFactory)) { + throw new IAE("[%s] should implement FiniteFirehoseFactory", firehoseFactory.getClass().getSimpleName()); + } + + this.baseFirehoseFactory = (FiniteFirehoseFactory) firehoseFactory; + this.indexingServiceClient = indexingServiceClient; + this.chatHandlerProvider = chatHandlerProvider; + this.authorizerMapper = authorizerMapper; + this.rowIngestionMetersFactory = rowIngestionMetersFactory; + + if (ingestionSchema.getTuningConfig().getMaxSavedParseExceptions() > 0) { + log.warn("maxSavedParseExceptions is not supported yet"); + } + if (ingestionSchema.getTuningConfig().getMaxParseExceptions() > 0) { + log.warn("maxParseExceptions is not supported yet"); + } + if (ingestionSchema.getTuningConfig().isLogParseExceptions()) { + log.warn("logParseExceptions is not supported yet"); + } + } + + @Override + public int getPriority() + { + return getContextValue(Tasks.PRIORITY_KEY, Tasks.DEFAULT_BATCH_INDEX_TASK_PRIORITY); + } + + @Override + public String getType() + { + return TYPE; + } + + @JsonProperty("spec") + public ParallelIndexIngestionSpec getIngestionSchema() + { + return ingestionSchema; + } + + @VisibleForTesting + @Nullable + ParallelIndexTaskRunner getRunner() + { + return runner; + } + + @VisibleForTesting + AuthorizerMapper getAuthorizerMapper() + { + return authorizerMapper; + } + + @VisibleForTesting + ParallelIndexTaskRunner createRunner() + { + if (ingestionSchema.getTuningConfig().isForceGuaranteedRollup()) { + throw new UnsupportedOperationException("Perfect roll-up is not supported yet"); + } else { + runner = new SinglePhaseParallelIndexTaskRunner( + getId(), + getGroupId(), + ingestionSchema, + getContext(), + indexingServiceClient, + chatHandlerProvider, + authorizerMapper + ); + } + return runner; + } + + @Override + public boolean isReady(TaskActionClient taskActionClient) throws Exception + { + final Optional<SortedSet<Interval>> intervals = ingestionSchema.getDataSchema() + .getGranularitySpec() + .bucketIntervals(); + + return !intervals.isPresent() || isReady(taskActionClient, intervals.get()); + } + + static boolean isReady(TaskActionClient actionClient, SortedSet<Interval> intervals) throws IOException + { + final List<TaskLock> locks = getTaskLocks(actionClient); + if (locks.size() == 0) { Review comment: Done. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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