Package org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair

Class FSParentQueue

java.lang.Object

org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSQueue

org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSParentQueue

All Implemented Interfaces:

Schedulable, Queue

@Private
@Unstable
public class FSParentQueue
extends FSQueue

Field Summary

Fields inherited from class org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSQueue

maxAMShare, maxContainerAllocation, maxRunningApps, minShare, parent, policy, recordFactory, scheduler, weights

Constructor Summary

Constructors

Constructor	Description
FSParentQueue(String name, FairScheduler scheduler, FSParentQueue parent)

Method Summary

Modifier and Type	Method	Description
org.apache.hadoop.yarn.api.records.Resource	assignContainer(FSSchedulerNode node)	Assign a container on this node if possible, and return the amount of resources assigned.
void	collectSchedulerApplications(Collection<org.apache.hadoop.yarn.api.records.ApplicationAttemptId> apps)	Adds all applications in the queue and its subqueues to the given collection.
protected void	dumpStateInternal(StringBuilder sb)	Recursively dump states of all queues.
ActiveUsersManager	getAbstractUsersManager()
List<FSQueue>	getChildQueues()	Gets the children of this queue, if any.
org.apache.hadoop.yarn.api.records.Resource	getDemand()	Maximum number of resources required by this Schedulable.
org.apache.hadoop.yarn.api.records.Resource	getMaximumContainerAllocation()
int	getNumRunnableApps()	Return the number of apps for which containers can be allocated.
List<org.apache.hadoop.yarn.api.records.QueueUserACLInfo>	getQueueUserAclInfo(org.apache.hadoop.security.UserGroupInformation user)	Get queue ACLs for given user.
boolean	isEmpty()
void	recoverContainer(org.apache.hadoop.yarn.api.records.Resource clusterResource, SchedulerApplicationAttempt schedulerAttempt, RMContainer rmContainer)	Recover the state of the queue for a given container.
void	updateDemand()	Refresh the Schedulable's demand and those of its children if any.

Methods inherited from class org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSQueue

decPendingResource, decReservedResource, decUsedResource, dumpState, getAccessibleNodeLabels, getDefaultApplicationPriority, getDefaultNodeLabelExpression, getFairShare, getMaxAMShare, getMaxChildQueueResource, getMaxRunningApps, getMaxShare, getMetrics, getMinShare, getName, getParent, getPolicy, getPriority, getQueueInfo, getQueueName, getQueueStatistics, getRawMaxShare, getReservedResource, getResourceUsage, getStartTime, getSteadyFairShare, getWeight, hasAccess, incPendingResource, incReservedResource, incUsedResource, isActive, isDynamic, isPreemptable, reinit, setDynamic, setFairShare, setMaxAMShare, setMaxChildQueueResource, setMaxContainerAllocation, setMaxRunningApps, setMaxShare, setMinShare, setPolicy, setWeights, toString, update, verifyAndSetPolicyFromConf

Methods inherited from class java.lang.Object

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

Constructor Details

FSParentQueue

public FSParentQueue(String name,
 FairScheduler scheduler,
 FSParentQueue parent)

Method Details

getMaximumContainerAllocation

public org.apache.hadoop.yarn.api.records.Resource getMaximumContainerAllocation()

Specified by:

getMaximumContainerAllocation in class FSQueue

getDemand

public org.apache.hadoop.yarn.api.records.Resource getDemand()

Description copied from interface: Schedulable

Maximum number of resources required by this Schedulable. This is defined as number of currently utilized resources + number of unlaunched resources (that are either not yet launched or need to be speculated).

Returns:

resources required by this Schedulable.

updateDemand

public void updateDemand()

Description copied from interface: Schedulable

Refresh the Schedulable's demand and those of its children if any.

getQueueUserAclInfo

public List<org.apache.hadoop.yarn.api.records.QueueUserACLInfo> getQueueUserAclInfo(org.apache.hadoop.security.UserGroupInformation user)

Description copied from interface: Queue

Get queue ACLs for given user.

Parameters:

user - username

Returns:

queue ACLs for user

assignContainer

public org.apache.hadoop.yarn.api.records.Resource assignContainer(FSSchedulerNode node)

Description copied from interface: Schedulable

Assign a container on this node if possible, and return the amount of resources assigned.

Parameters:

node - FSSchedulerNode.

Returns:

the amount of resources assigned.

getChildQueues

public List<FSQueue> getChildQueues()

Description copied from class: FSQueue

Gets the children of this queue, if any.

Specified by:

getChildQueues in class FSQueue

Returns:

the children of this queue.

getNumRunnableApps

public int getNumRunnableApps()

Description copied from class: FSQueue

Return the number of apps for which containers can be allocated. Includes apps in subqueues.

Specified by:

getNumRunnableApps in class FSQueue

Returns:

the number of apps.

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in class FSQueue

collectSchedulerApplications

public void collectSchedulerApplications(Collection<org.apache.hadoop.yarn.api.records.ApplicationAttemptId> apps)

Description copied from class: FSQueue

Adds all applications in the queue and its subqueues to the given collection.

Specified by:

collectSchedulerApplications in class FSQueue

Parameters:

apps - the collection to add the applications to

getAbstractUsersManager

public ActiveUsersManager getAbstractUsersManager()

recoverContainer

public void recoverContainer(org.apache.hadoop.yarn.api.records.Resource clusterResource,
 SchedulerApplicationAttempt schedulerAttempt,
 RMContainer rmContainer)

Description copied from interface: Queue

Recover the state of the queue for a given container.

Parameters:

clusterResource - the resource of the cluster

schedulerAttempt - the application for which the container was allocated

rmContainer - the container that was recovered.

dumpStateInternal

protected void dumpStateInternal(StringBuilder sb)

Description copied from class: FSQueue

Recursively dump states of all queues.

Specified by:

dumpStateInternal in class FSQueue

Parameters:

sb - the {code StringBuilder} which holds queue states