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From "Sunil Govindan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-6963) Prevent other containers from staring when a container is re-initializing
Date Sat, 17 Nov 2018 03:24:09 GMT

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

Sunil Govindan updated YARN-6963:
    Target Version/s: 3.3.0  (was: 3.2.0)

Bulk update: moved all 3.2.0 non-blocker issues, please move back if it is a blocker.

> 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
>            Priority: Major
> 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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