/**
* 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.yarn.server.resourcemanager;
import static org.apache.hadoop.metrics2.lib.Interns.info;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.metrics2.MetricsInfo;
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.MetricsRegistry;
import org.apache.hadoop.metrics2.lib.MutableGaugeInt;
import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeEventType;
@InterfaceAudience.Private
@Metrics(context="yarn")
public class ClusterMetrics {
private static AtomicBoolean isInitialized = new AtomicBoolean(false);
@Metric("# of active NMs") MutableGaugeInt numActiveNMs;
@Metric("# of decommissioned NMs") MutableGaugeInt numDecommissionedNMs;
@Metric("# of lost NMs") MutableGaugeInt numLostNMs;
@Metric("# of unhealthy NMs") MutableGaugeInt numUnhealthyNMs;
@Metric("# of Rebooted NMs") MutableGaugeInt numRebootedNMs;
private static final MetricsInfo RECORD_INFO = info("ClusterMetrics",
"Metrics for the Yarn Cluster");
private static volatile ClusterMetrics INSTANCE = null;
private static MetricsRegistry registry;
public static ClusterMetrics getMetrics() {
if(!isInitialized.get()){
synchronized (ClusterMetrics.class) {
if(INSTANCE == null){
INSTANCE = new ClusterMetrics();
registerMetrics();
isInitialized.set(true);
}
}
}
return INSTANCE;
}
private static void registerMetrics() {
registry = new MetricsRegistry(RECORD_INFO);
registry.tag(RECORD_INFO, "ResourceManager");
MetricsSystem ms = DefaultMetricsSystem.instance();
if (ms != null) {
ms.register("ClusterMetrics", "Metrics for the Yarn Cluster", INSTANCE);
}
}
//Active Nodemanagers
public int getNumActiveNMs() {
return numActiveNMs.value();
}
//Decommisioned NMs
public int getNumDecommisionedNMs() {
return numDecommissionedNMs.value();
}
public void incrDecommisionedNMs() {
numDecommissionedNMs.incr();
}
public void decrDecommisionedNMs() {
numDecommissionedNMs.decr();
}
//Lost NMs
public int getNumLostNMs() {
return numLostNMs.value();
}
public void incrNumLostNMs() {
numLostNMs.incr();
}
public void decrNumLostNMs() {
numLostNMs.decr();
}
//Unhealthy NMs
public int getUnhealthyNMs() {
return numUnhealthyNMs.value();
}
public void incrNumUnhealthyNMs() {
numUnhealthyNMs.incr();
}
public void decrNumUnhealthyNMs() {
numUnhealthyNMs.decr();
}
//Rebooted NMs
public int getNumRebootedNMs() {
return numRebootedNMs.value();
}
public void incrNumRebootedNMs() {
numRebootedNMs.incr();
}
public void decrNumRebootedNMs() {
numRebootedNMs.decr();
}
public void incrNumActiveNodes() {
numActiveNMs.incr();
}
public void decrNumActiveNodes() {
numActiveNMs.decr();
}
}