hadoop ReduceTaskAttemptInfo 源码
haddop ReduceTaskAttemptInfo 代码
文件路径：/hadoop-tools/hadoop-rumen/src/main/java/org/apache/hadoop/tools/rumen/ReduceTaskAttemptInfo.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.tools.rumen;
import java.util.List;
import org.apache.hadoop.mapred.TaskStatus.State;
/**
* {@link ReduceTaskAttemptInfo} represents the information with regard to a
* reduce task attempt.
*/
public class ReduceTaskAttemptInfo extends TaskAttemptInfo {
private long shuffleTime;
private long mergeTime;
private long reduceTime;
public ReduceTaskAttemptInfo(State state, TaskInfo taskInfo, long shuffleTime,
long mergeTime, long reduceTime, List<List<Integer>> allSplits) {
super(state, taskInfo,
allSplits == null
? LoggedTaskAttempt.SplitVectorKind.getNullSplitsVector()
: allSplits);
this.shuffleTime = shuffleTime;
this.mergeTime = mergeTime;
this.reduceTime = reduceTime;
}
/**
*
* @deprecated please use the constructor with
* {@code (state, taskInfo, shuffleTime, mergeTime, reduceTime
* List<List<Integer>> allSplits)}
* instead.
*
* see {@link LoggedTaskAttempt} for an explanation of
* {@code allSplits}.
*
* If there are no known splits, use {@code null}.
*/
@Deprecated
public ReduceTaskAttemptInfo(State state, TaskInfo taskInfo, long shuffleTime,
long mergeTime, long reduceTime) {
this(state, taskInfo, shuffleTime, mergeTime, reduceTime, null);
}
/**
* Get the runtime for the <b>reduce</b> phase of the reduce task-attempt.
*
* @return the runtime for the <b>reduce</b> phase of the reduce task-attempt
*/
public long getReduceRuntime() {
return reduceTime;
}
/**
* Get the runtime for the <b>shuffle</b> phase of the reduce task-attempt.
*
* @return the runtime for the <b>shuffle</b> phase of the reduce task-attempt
*/
public long getShuffleRuntime() {
return shuffleTime;
}
/**
* Get the runtime for the <b>merge</b> phase of the reduce task-attempt
*
* @return the runtime for the <b>merge</b> phase of the reduce task-attempt
*/
public long getMergeRuntime() {
return mergeTime;
}
@Override
public long getRuntime() {
return (getShuffleRuntime() + getMergeRuntime() + getReduceRuntime());
}
}
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