sort/io/LocalDiskShuffleExecutorComponents.java

0001 /*
0002  * Licensed to the Apache Software Foundation (ASF) under one or more
0003  * contributor license agreements.  See the NOTICE file distributed with
0004  * this work for additional information regarding copyright ownership.
0005  * The ASF licenses this file to You under the Apache License, Version 2.0
0006  * (the "License"); you may not use this file except in compliance with
0007  * the License.  You may obtain a copy of the License at
0008  *
0009  *    http://www.apache.org/licenses/LICENSE-2.0
0010  *
0011  * Unless required by applicable law or agreed to in writing, software
0012  * distributed under the License is distributed on an "AS IS" BASIS,
0013  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0014  * See the License for the specific language governing permissions and
0015  * limitations under the License.
0016  */
0017
0018 package org.apache.spark.shuffle.sort.io;
0019
0020 import java.util.Map;
0021 import java.util.Optional;
0022
0023 import com.google.common.annotations.VisibleForTesting;
0024
0025 import org.apache.spark.SparkConf;
0026 import org.apache.spark.SparkEnv;
0027 import org.apache.spark.shuffle.api.ShuffleExecutorComponents;
0028 import org.apache.spark.shuffle.api.ShuffleMapOutputWriter;
0029 import org.apache.spark.shuffle.IndexShuffleBlockResolver;
0030 import org.apache.spark.shuffle.api.SingleSpillShuffleMapOutputWriter;
0031 import org.apache.spark.storage.BlockManager;
0032
0033 public class LocalDiskShuffleExecutorComponents implements ShuffleExecutorComponents {
0034
0035   private final SparkConf sparkConf;
0036   private BlockManager blockManager;
0037   private IndexShuffleBlockResolver blockResolver;
0038
0039   public LocalDiskShuffleExecutorComponents(SparkConf sparkConf) {
0040     this.sparkConf = sparkConf;
0041   }
0042
0043   @VisibleForTesting
0044   public LocalDiskShuffleExecutorComponents(
0045       SparkConf sparkConf,
0046       BlockManager blockManager,
0047       IndexShuffleBlockResolver blockResolver) {
0048     this.sparkConf = sparkConf;
0049     this.blockManager = blockManager;
0050     this.blockResolver = blockResolver;
0051   }
0052
0053   @Override
0054   public void initializeExecutor(String appId, String execId, Map<String, String> extraConfigs) {
0055     blockManager = SparkEnv.get().blockManager();
0056     if (blockManager == null) {
0057       throw new IllegalStateException("No blockManager available from the SparkEnv.");
0058     }
0059     blockResolver = new IndexShuffleBlockResolver(sparkConf, blockManager);
0060   }
0061
0062   @Override
0063   public ShuffleMapOutputWriter createMapOutputWriter(
0064       int shuffleId,
0065       long mapTaskId,
0066       int numPartitions) {
0067     if (blockResolver == null) {
0068       throw new IllegalStateException(
0069           "Executor components must be initialized before getting writers.");
0070     }
0071     return new LocalDiskShuffleMapOutputWriter(
0072         shuffleId, mapTaskId, numPartitions, blockResolver, sparkConf);
0073   }
0074
0075   @Override
0076   public Optional<SingleSpillShuffleMapOutputWriter> createSingleFileMapOutputWriter(
0077       int shuffleId,
0078       long mapId) {
0079     if (blockResolver == null) {
0080       throw new IllegalStateException(
0081           "Executor components must be initialized before getting writers.");
0082     }
0083     return Optional.of(new LocalDiskSingleSpillMapOutputWriter(shuffleId, mapId, blockResolver));
0084   }
0085 }