[jira] [Commented] (YARN-3337) Provide YARN chaos monkey

["Junping Du (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-3337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14734024#comment-14734024 ] 

Junping Du commented on YARN-3337:
----------------------------------

Thanks [~rmetzger] for sharing this. 
[~stevel@apache.org], do you think this tool is good enough for SLIDER case or we want a more formal CLI in YARN to support this scenario and other scenarios? If latter option is preferred, I can help to add a new API in ApplicationClientProtocol (may be called forceKillContainer()), and add related CLI work. What do you think?

> Provide YARN chaos monkey
> -------------------------
>
>                 Key: YARN-3337
>                 URL: https://issues.apache.org/jira/browse/YARN-3337
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: test
>    Affects Versions: 2.7.0
>            Reporter: Steve Loughran
>
> To test failure resilience today you either need custom scripts or implement Chaos Monkey-like logic in your application (SLIDER-202). 
> Killing AMs and containers on a schedule & probability is the core activity here, one that could be handled by a CLI App/client lib that does this. 
> # entry point to have a startup delay before acting
> # frequency of chaos wakeup/polling
> # probability to AM failure generation (0-100)
> # probability of non-AM container kill
> # future: other operations



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