AmatyaAvadhanula commented on code in PR #14407: URL: https://github.com/apache/druid/pull/14407#discussion_r1282706422
########## indexing-service/src/main/java/org/apache/druid/indexing/common/actions/SegmentTransactionalAppendAction.java: ########## @@ -0,0 +1,239 @@ +/* + * 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.indexing.common.actions; + +import com.fasterxml.jackson.annotation.JsonCreator; +import com.fasterxml.jackson.annotation.JsonProperty; +import com.fasterxml.jackson.core.type.TypeReference; +import com.google.common.collect.ImmutableSet; +import org.apache.druid.indexing.common.TaskLock; +import org.apache.druid.indexing.common.task.IndexTaskUtils; +import org.apache.druid.indexing.common.task.Task; +import org.apache.druid.indexing.overlord.CriticalAction; +import org.apache.druid.indexing.overlord.DataSourceMetadata; +import org.apache.druid.indexing.overlord.SegmentPublishResult; +import org.apache.druid.indexing.overlord.TaskLockInfo; +import org.apache.druid.java.util.emitter.service.ServiceMetricEvent; +import org.apache.druid.query.DruidMetrics; +import org.apache.druid.segment.SegmentUtils; +import org.apache.druid.timeline.DataSegment; +import org.joda.time.Interval; + +import javax.annotation.Nullable; +import java.util.HashMap; +import java.util.HashSet; +import java.util.Map; +import java.util.Set; +import java.util.stream.Collectors; + +/** + * Append segments to metadata storage. The segment versions must all be less than or equal to a lock held by + * your task for the segment intervals. + */ +public class SegmentTransactionalAppendAction implements TaskAction<SegmentPublishResult> +{ + private final Set<DataSegment> segments; + + @Nullable + private final DataSourceMetadata startMetadata; + @Nullable + private final DataSourceMetadata endMetadata; + @Nullable + private final String dataSource; + + public static SegmentTransactionalAppendAction appendAction( + Set<DataSegment> segments, + @Nullable DataSourceMetadata startMetadata, + @Nullable DataSourceMetadata endMetadata + ) + { + return new SegmentTransactionalAppendAction(segments, startMetadata, endMetadata, null); + } + + @JsonCreator + private SegmentTransactionalAppendAction( + @JsonProperty("segments") @Nullable Set<DataSegment> segments, + @JsonProperty("startMetadata") @Nullable DataSourceMetadata startMetadata, + @JsonProperty("endMetadata") @Nullable DataSourceMetadata endMetadata, + @JsonProperty("dataSource") @Nullable String dataSource + ) + { + this.segments = segments == null ? ImmutableSet.of() : ImmutableSet.copyOf(segments); + this.startMetadata = startMetadata; + this.endMetadata = endMetadata; + this.dataSource = dataSource; + } + + @JsonProperty + public Set<DataSegment> getSegments() + { + return segments; + } + + @JsonProperty + @Nullable + public DataSourceMetadata getStartMetadata() + { + return startMetadata; + } + + @JsonProperty + @Nullable + public DataSourceMetadata getEndMetadata() + { + return endMetadata; + } + + @JsonProperty + @Nullable + public String getDataSource() + { + return dataSource; + } + + @Override + public TypeReference<SegmentPublishResult> getReturnTypeReference() + { + return new TypeReference<SegmentPublishResult>() + { + }; + } + + /** + * Performs some sanity checks and publishes the given segments. + */ + @Override + public SegmentPublishResult perform(Task task, TaskActionToolbox toolbox) + { + final SegmentPublishResult retVal; + + if (segments.isEmpty()) { + // A stream ingestion task didn't ingest any rows and created no segments (e.g., all records were unparseable), + // but still needs to update metadata with the progress that the task made. + try { + retVal = toolbox.getIndexerMetadataStorageCoordinator().commitMetadataOnly( + dataSource, + startMetadata, + endMetadata + ); + } + catch (Exception e) { + throw new RuntimeException(e); + } + return retVal; + } + + final Set<DataSegment> allSegments = new HashSet<>(segments); + + String datasource = task.getDataSource(); + Map<Interval, TaskLock> replaceLocks = new HashMap<>(); + for (TaskLock lock : TaskLocks.findReplaceLocksForSegments(datasource, toolbox.getTaskLockbox(), segments)) { + replaceLocks.put(lock.getInterval(), lock); + } Review Comment: Yes, since two REPLACE locks cannot coexist for overlapping intervals -- This is an automated message from the Apache Git Service. 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