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Posted to yarn-issues@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2017/02/16 07:48:41 UTC
[jira] [Updated] (YARN-4212) FairScheduler: Can't create a DRF
queue under a FAIR policy queue
[ https://issues.apache.org/jira/browse/YARN-4212?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Karthik Kambatla updated YARN-4212:
-----------------------------------
Summary: FairScheduler: Can't create a DRF queue under a FAIR policy queue (was: FairScheduler: Parent queues is not allowed to be 'Fair' policy if its children have the "drf" policy)
> FairScheduler: Can't create a DRF queue under a FAIR policy queue
> -----------------------------------------------------------------
>
> Key: YARN-4212
> URL: https://issues.apache.org/jira/browse/YARN-4212
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Arun Suresh
> Assignee: Yufei Gu
> Labels: fairscheduler
> Attachments: YARN-4212.002.patch, YARN-4212.003.patch, YARN-4212.004.patch, YARN-4212.005.patch, YARN-4212.006.patch, YARN-4212.007.patch, YARN-4212.008.patch, YARN-4212.009.patch, YARN-4212.010.patch, YARN-4212.011.patch, YARN-4212.1.patch
>
>
> The Fair Scheduler, while performing a {{recomputeShares()}} during an {{update()}} call, uses the parent queues policy to distribute shares to its children.
> If the parent queues policy is 'fair', it only computes weight for memory and sets the vcores fair share of its children to 0.
> Assuming a situation where we have 1 parent queue with policy 'fair' and multiple leaf queues with policy 'drf', Any app submitted to the child queues with vcore requirement > 1 will always be above fairshare, since during the recomputeShare process, the child queues were all assigned 0 for fairshare vcores.
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