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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-6963) Prevent other containers from staring when a container is re-initializing
Date Fri, 29 Sep 2017 20:56:12 GMT

     [ https://issues.apache.org/jira/browse/YARN-6963?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arun Suresh updated YARN-6963:
------------------------------
    Target Version/s: 3.1.0  (was: 2.9.0, 3.0.0)

> Prevent other containers from staring when a container is re-initializing
> -------------------------------------------------------------------------
>
>                 Key: YARN-6963
>                 URL: https://issues.apache.org/jira/browse/YARN-6963
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Arun Suresh
>            Assignee: Arun Suresh
>
> Further to discussions in YARN-6920.
> Container re-initialization will lead to momentary relinquishing of NM resources when
the container is brought down followed by re-claiming of the same resources when it is re-launched.
If there are Opportunistic containers in the queue, it can lead to un-necessary churn if one
of those opportunistic containers are started and immediately killed.
> This JIRA tracks changes required to prevent the above by ensuring the resources for
a container are 'locked' for the during of the container lifetime - including the time it
takes for a re-initialization. 



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