org.apache.hadoop.hdfs.server.common

Class MetricsLoggerTask

java.lang.Object

org.apache.hadoop.hdfs.server.common.MetricsLoggerTask

All Implemented Interfaces:

Runnable

public class MetricsLoggerTask
extends Object
implements Runnable

MetricsLoggerTask can be used as utility to dump metrics to log.

Field Summary

Fields

Modifier and Type	Field and Description
static org.apache.commons.logging.Log	LOG

Constructor Summary

Constructors

Constructor and Description
MetricsLoggerTask(org.apache.commons.logging.Log metricsLog, String nodeName, short maxLogLineLength)

Method Summary

Methods

Modifier and Type	Method and Description
static void	makeMetricsLoggerAsync(org.apache.commons.logging.Log metricsLog) Make the metrics logger async and add all pre-existing appenders to the async appender.
void	run() Write metrics to the metrics appender when invoked.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOG

public static final org.apache.commons.logging.Log LOG

Constructor Detail

MetricsLoggerTask

public MetricsLoggerTask(org.apache.commons.logging.Log metricsLog,
                 String nodeName,
                 short maxLogLineLength)

Method Detail

run

public void run()

Write metrics to the metrics appender when invoked.

Specified by:

run in interface Runnable

makeMetricsLoggerAsync

public static void makeMetricsLoggerAsync(org.apache.commons.logging.Log metricsLog)

Make the metrics logger async and add all pre-existing appenders to the async appender.