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From "Jun Gong (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (YARN-5154) DelayedProcessKiller can kill the wrong process if pid is recycled
Date Thu, 26 May 2016 12:35:12 GMT

     [ https://issues.apache.org/jira/browse/YARN-5154?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jun Gong reassigned YARN-5154:
------------------------------

    Assignee: Jun Gong

> DelayedProcessKiller can kill the wrong process if pid is recycled
> ------------------------------------------------------------------
>
>                 Key: YARN-5154
>                 URL: https://issues.apache.org/jira/browse/YARN-5154
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.8.0, 2.7.2, 2.6.4
>            Reporter: Jason Lowe
>            Assignee: Jun Gong
>
> YARN-4459 reduced the chance of the container-executor accidentally killing the wrong
process when pids are recycled, but it can still occur.  We should improve the DelayedProcessKiller
to cancel the timer if the container exits between the deliverly of the two signals and/or
implement some sanity checks in the executor just before delivering the signal to try to avoid
killing the wrong thing.



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