org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor

Class ContainersMonitorImpl

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainersMonitorImpl

All Implemented Interfaces:

Closeable, AutoCloseable, Service, EventHandler<ContainersMonitorEvent>, ContainersMonitor, ResourceView

public class ContainersMonitorImpl
extends AbstractService
implements ContainersMonitor

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.service.Service

Service.STATE

Constructor Summary

Constructors

Constructor and Description
ContainersMonitorImpl(ContainerExecutor exec, AsyncDispatcher dispatcher, Context context)

Method Summary

Methods

Modifier and Type	Method and Description
long	getPmemAllocatedForContainers()
long	getVmemAllocatedForContainers()
void	handle(ContainersMonitorEvent monitoringEvent)
boolean	isPmemCheckEnabled() Is the total physical memory check enabled?
boolean	isVmemCheckEnabled() Is the total virtual memory check enabled?
protected void	serviceInit(Configuration conf) All initialization code needed by a service.
protected void	serviceStart() Actions called during the INITED to STARTED transition.
protected void	serviceStop() Actions called during the transition to the STOPPED state.

Methods inherited from class org.apache.hadoop.service.AbstractService

close, getBlockers, getConfig, getFailureCause, getFailureState, getLifecycleHistory, getName, getServiceState, getStartTime, init, isInState, noteFailure, putBlocker, registerGlobalListener, registerServiceListener, removeBlocker, setConfig, start, stop, toString, unregisterGlobalListener, unregisterServiceListener, waitForServiceToStop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.service.Service

close, getBlockers, getConfig, getFailureCause, getFailureState, getLifecycleHistory, getName, getServiceState, getStartTime, init, isInState, registerServiceListener, start, stop, unregisterServiceListener, waitForServiceToStop

Constructor Detail

ContainersMonitorImpl

public ContainersMonitorImpl(ContainerExecutor exec,
                     AsyncDispatcher dispatcher,
                     Context context)

Method Detail

serviceInit

protected void serviceInit(Configuration conf)
                    throws Exception

Description copied from class: AbstractService

All initialization code needed by a service. This method will only ever be called once during the lifecycle of a specific service instance. Implementations do not need to be synchronized as the logic in AbstractService.init(Configuration) prevents re-entrancy. The base implementation checks to see if the subclass has created a new configuration instance, and if so, updates the base class value

Overrides:

serviceInit in class AbstractService

Parameters:

conf - configuration

Throws:

Exception - on a failure -these will be caught, possibly wrapped, and wil; trigger a service stop

serviceStart

protected void serviceStart()
                     throws Exception

Description copied from class: AbstractService

Actions called during the INITED to STARTED transition. This method will only ever be called once during the lifecycle of a specific service instance. Implementations do not need to be synchronized as the logic in AbstractService.start() prevents re-entrancy.

Overrides:

serviceStart in class AbstractService

Throws:

Exception - if needed -these will be caught, wrapped, and trigger a service stop

serviceStop

protected void serviceStop()
                    throws Exception

Description copied from class: AbstractService

Actions called during the transition to the STOPPED state. This method will only ever be called once during the lifecycle of a specific service instance. Implementations do not need to be synchronized as the logic in AbstractService.stop() prevents re-entrancy. Implementations MUST write this to be robust against failures, including checks for null references -and for the first failure to not stop other attempts to shut down parts of the service.

Overrides:

serviceStop in class AbstractService

Throws:

Exception - if needed -these will be caught and logged.

getVmemAllocatedForContainers

public long getVmemAllocatedForContainers()

Specified by:

getVmemAllocatedForContainers in interface ResourceView

isPmemCheckEnabled

public boolean isPmemCheckEnabled()

Is the total physical memory check enabled?

Specified by:

isPmemCheckEnabled in interface ResourceView

Returns:

true if total physical memory check is enabled.

getPmemAllocatedForContainers

public long getPmemAllocatedForContainers()

Specified by:

getPmemAllocatedForContainers in interface ResourceView

isVmemCheckEnabled

public boolean isVmemCheckEnabled()

Is the total virtual memory check enabled?

Specified by:

isVmemCheckEnabled in interface ResourceView

Returns:

true if total virtual memory check is enabled.

handle

public void handle(ContainersMonitorEvent monitoringEvent)

Specified by:

handle in interface EventHandler<ContainersMonitorEvent>