spark LocalDiskShuffleDriverComponents 源码
spark LocalDiskShuffleDriverComponents 代码
文件路径：/core/src/main/java/org/apache/spark/shuffle/sort/io/LocalDiskShuffleDriverComponents.java
/*
* 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.spark.shuffle.sort.io;
import java.util.Collections;
import java.util.Map;
import org.apache.spark.SparkEnv;
import org.apache.spark.shuffle.api.ShuffleDriverComponents;
import org.apache.spark.storage.BlockManagerMaster;
public class LocalDiskShuffleDriverComponents implements ShuffleDriverComponents {
private BlockManagerMaster blockManagerMaster;
@Override
public Map<String, String> initializeApplication() {
blockManagerMaster = SparkEnv.get().blockManager().master();
return Collections.emptyMap();
}
@Override
public void cleanupApplication() {
// nothing to clean up
}
@Override
public void removeShuffle(int shuffleId, boolean blocking) {
if (blockManagerMaster == null) {
throw new IllegalStateException("Driver components must be initialized before using");
}
blockManagerMaster.removeShuffle(shuffleId, blocking);
}
}
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