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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5609) Expose upgrade and restart API in ContainerManagementProtocol
Date Thu, 22 Sep 2016 04:56:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-5609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15512144#comment-15512144
] 

Arun Suresh commented on YARN-5609:
-----------------------------------

bq. during rollback, we should not merge the current resourceSet with new one.. it should
just be replaced
Oops.. I meant _restart_ instead of _rollback_. in the case of a restart (if there exists
a rollback state when the restart is called), both old and new Launch contexts are non-null,
so in v006, it used to merge it.. now it doesnt. I know the {{isRollback}} boolean is not
really needed... but I thought it makes the code clearer..

> Expose upgrade and restart API in ContainerManagementProtocol
> -------------------------------------------------------------
>
>                 Key: YARN-5609
>                 URL: https://issues.apache.org/jira/browse/YARN-5609
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Arun Suresh
>            Assignee: Arun Suresh
>         Attachments: YARN-5609.001.patch, YARN-5609.002.patch, YARN-5609.003.patch, YARN-5609.004.patch,
YARN-5609.005.patch, YARN-5609.006.patch, YARN-5609.007.patch, YARN-5609.008.patch
>
>
> YARN-5620 and YARN-5637 allows an AM to explicitly *upgrade* a container with a new launch
context and subsequently *rollback* / *commit* the change on the Container. This can also
be used to simply *restart* the Container as well. 
> This JIRA proposes to extend the ContainerManagementProtocol with the following API:
> * *reInitializeContainer*
> * *rollbackLastUpgrade*
> * *commitLastUpgrade*
> * *restartContainer*



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