hadoop AbortTaskStage 源码
haddop AbortTaskStage 代码
文件路径：/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/committer/manifest/stages/AbortTaskStage.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.hadoop.mapreduce.lib.output.committer.manifest.stages;
import java.io.IOException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.hadoop.fs.Path;
import static org.apache.hadoop.mapreduce.lib.output.committer.manifest.ManifestCommitterStatisticNames.OP_STAGE_TASK_ABORT_TASK;
/**
* Abort a task.
*
* This is done by deleting the task directory.
* Exceptions may/may not be suppressed.
*/
public class AbortTaskStage extends
AbstractJobOrTaskStage<Boolean, Path> {
private static final Logger LOG = LoggerFactory.getLogger(
AbortTaskStage.class);
public AbortTaskStage(final StageConfig stageConfig) {
super(true, stageConfig, OP_STAGE_TASK_ABORT_TASK, false);
}
/**
* Delete the task attempt directory.
* @param suppressExceptions should exceptions be ignored?
* @return the directory
* @throws IOException failure when exceptions were not suppressed
*/
@Override
protected Path executeStage(final Boolean suppressExceptions)
throws IOException {
final Path dir = getTaskAttemptDir();
if (dir != null) {
LOG.info("{}: Deleting task attempt directory {}", getName(), dir);
deleteDir(dir, suppressExceptions);
}
return dir;
}
}
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