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From "Tsuyoshi OZAWA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1776) renewDelegationToken should survive RM failover
Date Mon, 24 Mar 2014 00:17:43 GMT

    [ https://issues.apache.org/jira/browse/YARN-1776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13944659#comment-13944659
] 

Tsuyoshi OZAWA commented on YARN-1776:
--------------------------------------

Sorry for the delay because I had a flight last weekend.

{code}
we do not support fencing yet
{code}

[~kkambatl], ah, I see. Agree with a latest patch. Thank you for the point.
[~zjshen], thanks for your work!

> renewDelegationToken should survive RM failover
> -----------------------------------------------
>
>                 Key: YARN-1776
>                 URL: https://issues.apache.org/jira/browse/YARN-1776
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Zhijie Shen
>            Assignee: Zhijie Shen
>             Fix For: 2.4.0
>
>         Attachments: YARN-1776.1.patch, YARN-1776.2.patch, YARN-1776.3.patch, YARN-1776.4.patch,
YARN-1776.5.patch, YARN-1776.6.patch
>
>
> When a delegation token is renewed, two RMStateStore operations: 1) removing the old
DT, and 2) storing the new DT will happen. If RM fails in between. There would be problem.



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