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Posted to yarn-issues@hadoop.apache.org by "Arun Suresh (JIRA)" <ji...@apache.org> on 2017/09/12 23:10:00 UTC
[jira] [Updated] (YARN-7185) ContainerScheduler should only look at
availableResource for GUARANTEED containers when OPPORTUNISTIC container
queuing is enabled.
[ https://issues.apache.org/jira/browse/YARN-7185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Arun Suresh updated YARN-7185:
------------------------------
Summary: ContainerScheduler should only look at availableResource for GUARANTEED containers when OPPORTUNISTIC container queuing is enabled. (was: ContainerScheduler should only look at availableResource for GUARANTEED containers when opportunistic scheduling is enabled )
> ContainerScheduler should only look at availableResource for GUARANTEED containers when OPPORTUNISTIC container queuing is enabled.
> -----------------------------------------------------------------------------------------------------------------------------------
>
> Key: YARN-7185
> URL: https://issues.apache.org/jira/browse/YARN-7185
> Project: Hadoop YARN
> Issue Type: Bug
> Components: yarn
> Reporter: Sumana Sathish
> Assignee: Tan, Wangda
> Priority: Blocker
> Attachments: YARN-7185.001.patch, YARN-7185.002.patch, YARN-7185.003.patch
>
>
> Found an issue:
> When DefaultContainerCalculator is enabled and opportunistic container allocation is disabled. It is possible that for a NM:
> {code}
> Σ(allocated-container.vcores) > nm.configured-vores.
> {code}
> When this happens, ContainerScheduler will report errors like:
> bq. ContainerScheduler (ContainerScheduler.java:pickOpportunisticContainersToKill(458)) - There are no sufficient resources to start guaranteed.
> This will be an incompatible change after 2.8 because before YARN-6706, we can start containers when DefaultContainerCalculator is configured and vcores is overallocated.
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