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From "Chandni Singh (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-8744) In some cases docker kill is used to stop non-privileged containers instead of sending the signal directly
Date Tue, 04 Sep 2018 22:05:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-8744?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chandni Singh updated YARN-8744:
--------------------------------
    Summary: In some cases docker kill is used to stop non-privileged containers instead of
sending the signal directly  (was: In some cases to stop non-privileged containers docker
kill is used instead of sending the signal directly)

> In some cases docker kill is used to stop non-privileged containers instead of sending
the signal directly
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-8744
>                 URL: https://issues.apache.org/jira/browse/YARN-8744
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Chandni Singh
>            Assignee: Chandni Singh
>            Priority: Major
>              Labels: docker
>
> With YARN-8706, stopping docker containers was achieved by 
> 1. parsing the user specified {{STOPSIGNAL}} via docker inspect
> 2. executing {{docker kill --signal=<STOPSIGNAL>}}
> Quoting [~ebadger]
> {quote}
> Additionally, for non-privileged containers, we don't need to call docker kill. Instead,
we can follow the code in handleContainerKill() and send the signal directly. I think this
code could probably be combined, since at this point handleContainerKill() and handleContainerStop()
will be doing the same thing. The only difference is that the STOPSIGNAL will be used for
the stop.
> {quote}
> To achieve the above, we need native code that accepts the name of the signal rather
than the value (number) of the signal. 



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