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From "Haibo Chen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4599) Set OOM control for memory cgroups
Date Thu, 17 May 2018 19:28:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-4599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16479588#comment-16479588
] 

Haibo Chen commented on YARN-4599:
----------------------------------

Two more comments:

1) The oomHandler will still have the flag as false because controlVirtualMemory has not been
initialized in  getDefaultOOMHandler().

2)  Let's change  /** Specifies whether to do memory check on overall usage vs
   * individual containers. */ => /*** Specifies whether to do memory check on overall
usage */

> Set OOM control for memory cgroups
> ----------------------------------
>
>                 Key: YARN-4599
>                 URL: https://issues.apache.org/jira/browse/YARN-4599
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>    Affects Versions: 2.9.0
>            Reporter: Karthik Kambatla
>            Assignee: Miklos Szegedi
>            Priority: Major
>              Labels: oct16-medium
>         Attachments: Elastic Memory Control in YARN.pdf, YARN-4599.000.patch, YARN-4599.001.patch,
YARN-4599.002.patch, YARN-4599.003.patch, YARN-4599.004.patch, YARN-4599.005.patch, YARN-4599.006.patch,
YARN-4599.007.patch, YARN-4599.008.patch, YARN-4599.009.patch, YARN-4599.010.patch, YARN-4599.011.patch,
YARN-4599.012.patch, YARN-4599.013.patch, YARN-4599.014.patch, YARN-4599.015.patch, YARN-4599.sandflee.patch,
yarn-4599-not-so-useful.patch
>
>
> YARN-1856 adds memory cgroups enforcing support. We should also explicitly set OOM control
so that containers are not killed as soon as they go over their usage. Today, one could set
the swappiness to control this, but clusters with swap turned off exist.



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