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_r201891707
########## File path: indexing-service/src/main/java/io/druid/indexing/common/actions/CountingSegmentAllocateAction.java ########## @@ -0,0 +1,196 @@ +/* + * 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.actions; + +import com.fasterxml.jackson.annotation.JsonCreator; +import com.fasterxml.jackson.annotation.JsonProperty; +import com.fasterxml.jackson.core.type.TypeReference; +import com.fasterxml.jackson.databind.DeserializationContext; +import com.fasterxml.jackson.databind.KeyDeserializer; +import com.fasterxml.jackson.databind.annotation.JsonDeserialize; +import com.google.common.base.Optional; +import com.google.common.base.Preconditions; +import io.druid.indexing.common.Counters; +import io.druid.indexing.common.task.Task; +import io.druid.java.util.common.ISE; +import io.druid.java.util.common.Intervals; +import io.druid.segment.indexing.granularity.GranularitySpec; +import io.druid.segment.realtime.appenderator.SegmentIdentifier; +import io.druid.timeline.partition.NumberedShardSpec; +import org.joda.time.DateTime; +import org.joda.time.Interval; + +import java.util.Map; +import java.util.Map.Entry; +import java.util.Objects; +import java.util.SortedSet; + +/** + * This action is to find a proper {@link io.druid.timeline.partition.ShardSpec} based on counting. This keeps track of + * the next shard number per {@link Interval} in {@link Counters}. The next shard number is incremented by 1 whenever a + * new {@link SegmentIdentifier} is allocated. + */ +public class CountingSegmentAllocateAction implements TaskAction<SegmentIdentifier> +{ + private final String dataSource; + private final DateTime timestamp; + private final GranularitySpec granularitySpec; + @JsonDeserialize(keyUsing = IntervalDeserializer.class) + private final Map<Interval, String> versions; + + private final SortedSet<Interval> bucketIntervals; + + @JsonCreator + public CountingSegmentAllocateAction( + @JsonProperty("dataSource") String dataSource, + @JsonProperty("timestamp") DateTime timestamp, + @JsonProperty("granularitySpec") GranularitySpec granularitySpec, + @JsonProperty("versions") Map<Interval, String> versions + ) + { + this.dataSource = Preconditions.checkNotNull(dataSource, "dataSource"); + this.timestamp = Preconditions.checkNotNull(timestamp, "timestamp"); + this.granularitySpec = Preconditions.checkNotNull(granularitySpec, "granularitySpec"); + this.versions = Preconditions.checkNotNull(versions, "versions"); + + this.bucketIntervals = Preconditions.checkNotNull(granularitySpec.bucketIntervals().orNull(), "bucketIntervals"); + } + + @JsonProperty + public String getDataSource() + { + return dataSource; + } + + @JsonProperty + public DateTime getTimestamp() + { + return timestamp; + } + + @JsonProperty + public GranularitySpec getGranularitySpec() + { + return granularitySpec; + } + + @JsonProperty + public Map<Interval, String> getVersions() + { + return versions; + } + + @Override + public TypeReference<SegmentIdentifier> getReturnTypeReference() + { + return new TypeReference<SegmentIdentifier>() Review comment: Hmm, what is the benefit of making this to a static final variable here? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on 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 With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@druid.apache.org For additional commands, e-mail: dev-h...@druid.apache.org
