Package org.apache.hadoop.service.launcher

Class HadoopUncaughtExceptionHandler

java.lang.Object

org.apache.hadoop.service.launcher.HadoopUncaughtExceptionHandler

All Implemented Interfaces:

java.lang.Thread.UncaughtExceptionHandler

@Public
@Evolving
public class HadoopUncaughtExceptionHandler
extends java.lang.Object
implements java.lang.Thread.UncaughtExceptionHandler

This class is intended to be installed by calling Thread.setDefaultUncaughtExceptionHandler(UncaughtExceptionHandler) in the main entry point. The base class will always attempt to shut down the process if an Error was raised; the behavior on a standard Exception, raised outside process shutdown, is simply to log it. (Based on the class YarnUncaughtExceptionHandler)

Constructor Summary

Constructors

Constructor	Description
HadoopUncaughtExceptionHandler()	Basic exception handler -logs simple exceptions, then continues.
HadoopUncaughtExceptionHandler(java.lang.Thread.UncaughtExceptionHandler delegate)	Create an instance delegating to the supplied handler if the exception is considered "simple".

Method Summary

Modifier and Type	Method	Description
void	uncaughtException(java.lang.Thread thread, java.lang.Throwable exception)	Uncaught exception handler.

Methods inherited from class java.lang.Object

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

Constructor Detail

HadoopUncaughtExceptionHandler

public HadoopUncaughtExceptionHandler(java.lang.Thread.UncaughtExceptionHandler delegate)

Create an instance delegating to the supplied handler if the exception is considered "simple".

Parameters:

delegate - a delegate exception handler.

HadoopUncaughtExceptionHandler

public HadoopUncaughtExceptionHandler()

Basic exception handler -logs simple exceptions, then continues.

Method Detail

uncaughtException

public void uncaughtException(java.lang.Thread thread,
                              java.lang.Throwable exception)

Uncaught exception handler. If an error is raised: shutdown The state of the system is unknown at this point -attempting a clean shutdown is dangerous. Instead: exit

Specified by:

uncaughtException in interface java.lang.Thread.UncaughtExceptionHandler

Parameters:

thread - thread that failed

exception - the raised exception