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Posted to yarn-issues@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2014/06/12 23:21:02 UTC
[jira] [Updated] (YARN-2155) FairScheduler: Incorrect threshold
check for preemption
[ https://issues.apache.org/jira/browse/YARN-2155?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Karthik Kambatla updated YARN-2155:
-----------------------------------
Summary: FairScheduler: Incorrect threshold check for preemption (was: FairScheduler: Incorrect check when trigger a preemption)
> FairScheduler: Incorrect threshold check for preemption
> -------------------------------------------------------
>
> Key: YARN-2155
> URL: https://issues.apache.org/jira/browse/YARN-2155
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Wei Yan
> Assignee: Wei Yan
> Attachments: YARN-2155.patch
>
>
> {code}
> private boolean shouldAttemptPreemption() {
> if (preemptionEnabled) {
> return (preemptionUtilizationThreshold < Math.max(
> (float) rootMetrics.getAvailableMB() / clusterResource.getMemory(),
> (float) rootMetrics.getAvailableVirtualCores() /
> clusterResource.getVirtualCores()));
> }
> return false;
> }
> {code}
> preemptionUtilizationThreshould should be compared with allocatedResource instead of availableResource.
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