org.apache.spark.network.shuffle.NoOpMergedShuffleFileManager Maven / Gradle / Ivy
/*
* 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.network.shuffle;
import java.io.IOException;
import org.apache.spark.network.buffer.ManagedBuffer;
import org.apache.spark.network.client.StreamCallbackWithID;
import org.apache.spark.network.shuffle.protocol.ExecutorShuffleInfo;
import org.apache.spark.network.shuffle.protocol.FinalizeShuffleMerge;
import org.apache.spark.network.shuffle.protocol.MergeStatuses;
import org.apache.spark.network.shuffle.protocol.PushBlockStream;
import org.apache.spark.network.util.TransportConf;
/**
* Dummy implementation of merged shuffle file manager. Suitable for when push-based shuffle
* is not enabled.
*
* @since 3.1.0
*/
public class NoOpMergedShuffleFileManager implements MergedShuffleFileManager {
// This constructor is needed because we use this constructor to instantiate an implementation
// of MergedShuffleFileManager using reflection.
// See YarnShuffleService#newMergedShuffleFileManagerInstance.
public NoOpMergedShuffleFileManager(TransportConf transportConf) {}
@Override
public StreamCallbackWithID receiveBlockDataAsStream(PushBlockStream msg) {
throw new UnsupportedOperationException("Cannot handle shuffle block merge");
}
@Override
public MergeStatuses finalizeShuffleMerge(FinalizeShuffleMerge msg) throws IOException {
throw new UnsupportedOperationException("Cannot handle shuffle block merge");
}
@Override
public void registerExecutor(String appId, ExecutorShuffleInfo executorInfo) {
// No-Op. Do nothing.
}
@Override
public void applicationRemoved(String appId, boolean cleanupLocalDirs) {
// No-Op. Do nothing.
}
@Override
public ManagedBuffer getMergedBlockData(
String appId,
int shuffleId,
int shuffleMergeId,
int reduceId,
int chunkId) {
throw new UnsupportedOperationException("Cannot handle shuffle block merge");
}
@Override
public MergedBlockMeta getMergedBlockMeta(
String appId,
int shuffleId,
int shuffleMergeId,
int reduceId) {
throw new UnsupportedOperationException("Cannot handle shuffle block merge");
}
@Override
public String[] getMergedBlockDirs(String appId) {
throw new UnsupportedOperationException("Cannot handle shuffle block merge");
}
}