public class AbstractPreemptableResourceCalculator extends Object
PreemptionCandidatesSelector.| Modifier and Type | Field and Description | 
|---|---|
| protected CapacitySchedulerPreemptionContext | context | 
| protected boolean | isReservedPreemptionCandidatesSelector | 
| protected org.apache.hadoop.yarn.util.resource.ResourceCalculator | rc | 
| Constructor and Description | 
|---|
| AbstractPreemptableResourceCalculator(CapacitySchedulerPreemptionContext preemptionContext,
                                     boolean isReservedPreemptionCandidatesSelector,
                                     boolean allowQueuesBalanceAfterAllQueuesSatisfied)PreemptableResourceCalculator constructor. | 
| Modifier and Type | Method and Description | 
|---|---|
| protected void | computeFixpointAllocation(org.apache.hadoop.yarn.api.records.Resource totGuarant,
                         Collection<TempQueuePerPartition> qAlloc,
                         org.apache.hadoop.yarn.api.records.Resource unassigned,
                         boolean ignoreGuarantee)Given a set of queues compute the fix-point distribution of unassigned
 resources among them. | 
| protected void | initIdealAssignment(org.apache.hadoop.yarn.api.records.Resource totGuarant,
                   TempQueuePerPartition q,
                   org.apache.hadoop.yarn.api.records.Resource initIdealAssigned)This method is visible to allow sub-classes to override the initialization
 behavior. | 
protected final CapacitySchedulerPreemptionContext context
protected final org.apache.hadoop.yarn.util.resource.ResourceCalculator rc
protected boolean isReservedPreemptionCandidatesSelector
public AbstractPreemptableResourceCalculator(CapacitySchedulerPreemptionContext preemptionContext, boolean isReservedPreemptionCandidatesSelector, boolean allowQueuesBalanceAfterAllQueuesSatisfied)
preemptionContext - contextisReservedPreemptionCandidatesSelector - this will be set by different implementation of candidate
          selectors, please refer to TempQueuePerPartition#offer for
          details.allowQueuesBalanceAfterAllQueuesSatisfied - Should resources be preempted from an over-served queue when the
          requesting queues are all at or over their guarantees?
          An example is, there're 10 queues under root, guaranteed resource
          of them are all 10%.
          Assume there're two queues are using resources, queueA uses 10%
          queueB uses 90%. For all queues are guaranteed, but it's not fair
          for queueA.
          We wanna make this behavior can be configured. By default it is
          not allowed.protected void computeFixpointAllocation(org.apache.hadoop.yarn.api.records.Resource totGuarant,
                                         Collection<TempQueuePerPartition> qAlloc,
                                         org.apache.hadoop.yarn.api.records.Resource unassigned,
                                         boolean ignoreGuarantee)
totGuarant - total guaranteed resourceqAlloc - List of child queuesunassigned - Unassigned resource per queueignoreGuarantee - ignore guarantee per queue.protected void initIdealAssignment(org.apache.hadoop.yarn.api.records.Resource totGuarant,
                                   TempQueuePerPartition q,
                                   org.apache.hadoop.yarn.api.records.Resource initIdealAssigned)
totGuarant - total resources (useful for ResourceCalculator
          operations)q - the TempQueuePerPartition being initializedinitIdealAssigned - the proposed initialization value.Copyright © 2008–2023 Apache Software Foundation. All rights reserved.