Package org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity

Class FifoCandidatesSelector

java.lang.Object

org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.PreemptionCandidatesSelector

org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.FifoCandidatesSelector

public class FifoCandidatesSelector
extends PreemptionCandidatesSelector

Field Summary

Fields inherited from class org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.PreemptionCandidatesSelector

preemptionContext, rc

Method Summary

Modifier and Type	Method	Description
boolean	getAllowQueuesBalanceAfterAllQueuesSatisfied()
Map<org.apache.hadoop.yarn.api.records.ApplicationAttemptId,Set<RMContainer>>	selectCandidates(Map<org.apache.hadoop.yarn.api.records.ApplicationAttemptId,Set<RMContainer>> selectedCandidates, org.apache.hadoop.yarn.api.records.Resource clusterResource, org.apache.hadoop.yarn.api.records.Resource totalPreemptionAllowed)	Get preemption candidates from computed resource sharing and already selected candidates.

Methods inherited from class org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.PreemptionCandidatesSelector

getMaximumKillWaitTimeMs, setMaximumKillWaitTime

Methods inherited from class java.lang.Object

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

Method Details

selectCandidates

public Map<org.apache.hadoop.yarn.api.records.ApplicationAttemptId,Set<RMContainer>> selectCandidates(Map<org.apache.hadoop.yarn.api.records.ApplicationAttemptId,Set<RMContainer>> selectedCandidates,
 org.apache.hadoop.yarn.api.records.Resource clusterResource,
 org.apache.hadoop.yarn.api.records.Resource totalPreemptionAllowed)

Description copied from class: PreemptionCandidatesSelector

Get preemption candidates from computed resource sharing and already selected candidates.

Specified by:

selectCandidates in class PreemptionCandidatesSelector

Parameters:

selectedCandidates - already selected candidates from previous policies

clusterResource - total resource

totalPreemptionAllowed - how many resources allowed to be preempted in this round. Should be updated(in-place set) after the call

Returns:

merged selected candidates.

getAllowQueuesBalanceAfterAllQueuesSatisfied

public boolean getAllowQueuesBalanceAfterAllQueuesSatisfied()