org.apache.hadoop.mapred

Class TaskLogsTruncater

java.lang.Object

org.apache.hadoop.mapred.TaskLogsTruncater

public class TaskLogsTruncater
extends java.lang.Object

The class for truncating the user logs. Should be used only by UserLogManager.

Constructor Summary

Constructors

Constructor and Description
TaskLogsTruncater(org.apache.hadoop.conf.Configuration conf)

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	isTruncaterJvm() Return true if the current JVM is for truncation only.
static void	main(java.lang.String[] args)
boolean	shouldTruncateLogs(JVMInfo lInfo) Check the log file sizes generated by the attempts that ran in a particular JVM
void	truncateLogs(JVMInfo lInfo) Process the removed task's logs.

Methods inherited from class java.lang.Object

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

Constructor Detail

TaskLogsTruncater

public TaskLogsTruncater(org.apache.hadoop.conf.Configuration conf)

Method Detail

isTruncaterJvm

public static boolean isTruncaterJvm()

Return true if the current JVM is for truncation only.

shouldTruncateLogs

public boolean shouldTruncateLogs(JVMInfo lInfo)
                           throws java.io.IOException

Check the log file sizes generated by the attempts that ran in a particular JVM

Parameters:

lInfo -

Returns:

Throws:

java.io.IOException

truncateLogs

public void truncateLogs(JVMInfo lInfo)

Process the removed task's logs. This involves truncating them to retainSize.

main

public static void main(java.lang.String[] args)
                 throws java.io.IOException

Throws:

java.io.IOException