sort/io/LocalDiskShuffleDriverComponents.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.Collections;
0021 import java.util.Map;
0022
0023 import org.apache.spark.SparkEnv;
0024 import org.apache.spark.shuffle.api.ShuffleDriverComponents;
0025 import org.apache.spark.storage.BlockManagerMaster;
0026
0027 public class LocalDiskShuffleDriverComponents implements ShuffleDriverComponents {
0028
0029   private BlockManagerMaster blockManagerMaster;
0030
0031   @Override
0032   public Map<String, String> initializeApplication() {
0033     blockManagerMaster = SparkEnv.get().blockManager().master();
0034     return Collections.emptyMap();
0035   }
0036
0037   @Override
0038   public void cleanupApplication() {
0039     // nothing to clean up
0040   }
0041
0042   @Override
0043   public void removeShuffle(int shuffleId, boolean blocking) {
0044     if (blockManagerMaster == null) {
0045       throw new IllegalStateException("Driver components must be initialized before using");
0046     }
0047     blockManagerMaster.removeShuffle(shuffleId, blocking);
0048   }
0049 }