Package org.apache.hadoop.yarn.server.nodemanager.health

Class ExceptionReporter

java.lang.Object

org.apache.hadoop.yarn.server.nodemanager.health.ExceptionReporter

All Implemented Interfaces:

HealthReporter

public class ExceptionReporter
extends Object
implements HealthReporter

Simple HealthReporter implementation which reports whether a fatal exception has happened in the NodeManager. See the reportException call of NodeStatusUpdaterImpl

Method Summary

Modifier and Type	Method	Description
String	getHealthReport()	Returns output from health check.
long	getLastHealthReportTime()	Returns time stamp when node health check was last run.
boolean	isHealthy()	Gets whether the node is healthy or not.
void	reportException(Exception ex)	Report an exception to mark the node as unhealthy.

Methods inherited from class java.lang.Object

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

Method Details

isHealthy

public boolean isHealthy()

Description copied from interface: HealthReporter

Gets whether the node is healthy or not.

Specified by:

isHealthy in interface HealthReporter

Returns:

true if node is healthy

getHealthReport

public String getHealthReport()

Description copied from interface: HealthReporter

Returns output from health check. If node is healthy then an empty string is returned.

Specified by:

getHealthReport in interface HealthReporter

Returns:

output from health check

getLastHealthReportTime

public long getLastHealthReportTime()

Description copied from interface: HealthReporter

Returns time stamp when node health check was last run.

Specified by:

getLastHealthReportTime in interface HealthReporter

Returns:

timestamp when node health script was last run

reportException

public void reportException(Exception ex)

Report an exception to mark the node as unhealthy.

Parameters:

ex - the exception that makes the node unhealthy