org.apache.hadoop.mapreduce.task.reduce.ShuffleClientMetrics Maven / Gradle / Ivy
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* 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,
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*/
package org.apache.hadoop.mapreduce.task.reduce;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.metrics2.MetricsSystem;
import org.apache.hadoop.metrics2.annotation.Metric;
import org.apache.hadoop.metrics2.annotation.Metrics;
import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
import org.apache.hadoop.metrics2.lib.MutableCounterInt;
import org.apache.hadoop.metrics2.lib.MutableCounterLong;
import org.apache.hadoop.metrics2.lib.MutableGaugeInt;
import java.util.concurrent.ThreadLocalRandom;
@InterfaceAudience.LimitedPrivate({"MapReduce"})
@InterfaceStability.Unstable
@Metrics(name="ShuffleClientMetrics", context="mapred")
public class ShuffleClientMetrics {
@Metric
private MutableCounterInt numFailedFetches;
@Metric
private MutableCounterInt numSuccessFetches;
@Metric
private MutableCounterLong numBytes;
@Metric
private MutableGaugeInt numThreadsBusy;
private ShuffleClientMetrics() {
}
public static ShuffleClientMetrics create() {
MetricsSystem ms = DefaultMetricsSystem.initialize("JobTracker");
return ms.register("ShuffleClientMetrics-" +
ThreadLocalRandom.current().nextInt(), null,
new ShuffleClientMetrics());
}
public void inputBytes(long bytes) {
numBytes.incr(bytes);
}
public void failedFetch() {
numFailedFetches.incr();
}
public void successFetch() {
numSuccessFetches.incr();
}
public void threadBusy() {
numThreadsBusy.incr();
}
public void threadFree() {
numThreadsBusy.decr();
}
}