com.mapr.log4j

Class MR1CentralTaskLogAppender

java.lang.Object

org.apache.log4j.AppenderSkeleton

com.mapr.log4j.MaprfsLogAppender

com.mapr.log4j.CentralTaskLogAppender

com.mapr.log4j.MR1CentralTaskLogAppender

All Implemented Interfaces:

java.io.Flushable, org.apache.hadoop.fs.Syncable, org.apache.hadoop.mapred.TaskLog.LogdirSwitchable, org.apache.log4j.Appender, org.apache.log4j.spi.OptionHandler

public class MR1CentralTaskLogAppender
extends CentralTaskLogAppender
implements org.apache.hadoop.mapred.TaskLog.LogdirSwitchable

A simple log4j-appender for the system logs generated by MR1 jobs.

Field Summary

Fields inherited from class com.mapr.log4j.MaprfsLogAppender

BUFFER_SIZE, DIR_PREFIX, failoverAppender, failoverAppenderName, fileName, fileNamePath, immediateFlush, immediateSync, maprFS, nameHierarchy, syncIntervalSeconds, uri

Fields inherited from class org.apache.log4j.AppenderSkeleton

closed, errorHandler, headFilter, layout, name, tailFilter, threshold

Constructor Summary

Constructors

Constructor and Description
MR1CentralTaskLogAppender()

Method Summary

Modifier and Type	Method and Description
protected java.lang.Long	getFileSizeLimit() By default, there is no limit.
protected java.lang.String	getFrameworkType()
org.apache.hadoop.mapred.TaskLog.LogName	getLogname()
void	switchLogdir(java.lang.String dirname)

Methods inherited from class com.mapr.log4j.CentralTaskLogAppender

activateOptions, append, close, getIsCleanup, getTaskId, getTotalLogFileSize, setFile, setIsCleanup, setTaskId, setTotalLogFileSize

Methods inherited from class com.mapr.log4j.MaprfsLogAppender

closeFile, createFile, failoverToLocalLogs, flush, getFile, getFileSize, getImmediateFlush, getImmediateSync, getLogFilePermission, getSyncIntervalSeconds, hflush, hsync, requiresLayout, setFailoverAppender, setFS, setImmediateFlush, setImmediateSync, setSyncIntervalSeconds, setURI, sync, writeFooter, writeHeader

Methods inherited from class org.apache.log4j.AppenderSkeleton

addFilter, clearFilters, doAppend, finalize, getErrorHandler, getFilter, getFirstFilter, getLayout, getName, getThreshold, isAsSevereAsThreshold, setErrorHandler, setLayout, setName, setThreshold

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.mapred.TaskLog.LogdirSwitchable

close

Constructor Detail

MR1CentralTaskLogAppender

public MR1CentralTaskLogAppender()

Method Detail

getFrameworkType

protected java.lang.String getFrameworkType()

Overrides:

getFrameworkType in class CentralTaskLogAppender

switchLogdir

public void switchLogdir(java.lang.String dirname)

Specified by:

switchLogdir in interface org.apache.hadoop.mapred.TaskLog.LogdirSwitchable

getLogname

public org.apache.hadoop.mapred.TaskLog.LogName getLogname()

Specified by:

getLogname in interface org.apache.hadoop.mapred.TaskLog.LogdirSwitchable

getFileSizeLimit

protected java.lang.Long getFileSizeLimit()

Description copied from class: CentralTaskLogAppender

By default, there is no limit. Subclasses can override this behavior.

Overrides:

getFileSizeLimit in class CentralTaskLogAppender