/*
* 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.hdfs.server.hightidenode.metrics;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.metrics.MetricsContext;
import org.apache.hadoop.metrics.MetricsRecord;
import org.apache.hadoop.metrics.MetricsUtil;
import org.apache.hadoop.metrics.Updater;
import org.apache.hadoop.metrics.util.MetricsBase;
import org.apache.hadoop.metrics.util.MetricsRegistry;
import org.apache.hadoop.metrics.util.MetricsTimeVaryingLong;
import org.apache.hadoop.metrics.util.MetricsLongValue;
import org.apache.hadoop.metrics.jvm.JvmMetrics;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.server.hightidenode.HighTideNode;
/**
*
* This class is for maintaining the various HighTideNode activity statistics
* and publishing them through the metrics interfaces.
* This also registers the JMX MBean for RPC.
* <p>
* This class has a number of metrics variables that are publicly accessible;
* these variables (objects) have methods to update their values;
* for example:
* <p> {@link #syncs}.inc()
*
*/
public class HighTideNodeMetrics implements Updater {
public static final Log LOG = LogFactory.getLog(
"org.apache.hadoop.hdfs.server.hightidenode.metrics.HighTideNodeMetrics");
private final MetricsRecord metricsRecord;
public MetricsRegistry registry = new MetricsRegistry();
private HighTideNodeActivityMBean hightidenodeActivityMBean;
public MetricsTimeVaryingLong fixAttempt =
new MetricsTimeVaryingLong("FixAttempted", registry);
public MetricsTimeVaryingLong fixFailedModTimeMismatch =
new MetricsTimeVaryingLong("FixFailedModTimeMismatch", registry);
public MetricsTimeVaryingLong fixFailedBlockSizeMismatch =
new MetricsTimeVaryingLong("FixFailedBlockSizeMismatch", registry);
public MetricsTimeVaryingLong fixFailedFileLengthMismatch =
new MetricsTimeVaryingLong("FixFailedFileLengthMismatch", registry);
public MetricsTimeVaryingLong fixFailedNoGoodBlock =
new MetricsTimeVaryingLong("FixFailedNoGoodBlock", registry);
public MetricsTimeVaryingLong fixFailedDatanodeError =
new MetricsTimeVaryingLong("FixFailedDatanodeError", registry);
public MetricsTimeVaryingLong fixClearedOut =
new MetricsTimeVaryingLong("FixClearedOut", registry);
public MetricsTimeVaryingLong fixSuccessfullyStarted =
new MetricsTimeVaryingLong("FixSuccessfullyStarted", registry);
public MetricsTimeVaryingLong filesMatched =
new MetricsTimeVaryingLong("NumberOfFilesMatched", registry);
public MetricsTimeVaryingLong filesChanged =
new MetricsTimeVaryingLong("NumberOfFilesChanged", registry);
public MetricsLongValue savedSize =
new MetricsLongValue("SavedSize", registry);
public HighTideNodeMetrics(Configuration conf, HighTideNode hightideNode) {
String sessionId = conf.get("session.id");
// Initiate Java VM metrics
JvmMetrics.init("HighTideNode", sessionId);
// Now the Mbean for the name node - this also registers the MBean
hightidenodeActivityMBean = new HighTideNodeActivityMBean(registry);
// Create a record for HighTideNode metrics
MetricsContext metricsContext = MetricsUtil.getContext("dfs");
metricsRecord = MetricsUtil.createRecord(metricsContext, "hightidenode");
metricsRecord.setTag("sessionId", sessionId);
metricsContext.registerUpdater(this);
LOG.info("Initializing HighTideNodeMetrics using context object:" +
metricsContext.getClass().getName());
}
public void shutdown() {
if (hightidenodeActivityMBean != null)
hightidenodeActivityMBean.shutdown();
}
/**
* Since this object is a registered updater, this method will be called
* periodically, e.g. every 5 seconds.
*/
public void doUpdates(MetricsContext unused) {
synchronized (this) {
for (MetricsBase m : registry.getMetricsList()) {
m.pushMetric(metricsRecord);
}
}
metricsRecord.update();
}
/**
* Clear out all metrics that are min or max
*/
public void resetAllMinMax() {
}
}