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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10584) ActiveStandbyElector goes down if ZK quorum become unavailable
Date Mon, 15 Jun 2015 21:56:01 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14586986#comment-14586986
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Vinod Kumar Vavilapalli commented on HADOOP-10584:
--------------------------------------------------

Does seem critical to me, but haven't seen any activity in a while. [~kasha] / [~xgong], can
one of you comment on a possible fix? If it's uncertain, I'd like to move this to 2.7.2. Tx.

> ActiveStandbyElector goes down if ZK quorum become unavailable
> --------------------------------------------------------------
>
>                 Key: HADOOP-10584
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10584
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ha
>    Affects Versions: 2.4.0
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>            Priority: Critical
>         Attachments: hadoop-10584-prelim.patch, rm.log
>
>
> ActiveStandbyElector retries operations for a few times. If the ZK quorum itself is down,
it goes down and the daemons will have to be brought up again. 
> Instead, it should log the fact that it is unable to talk to ZK, call becomeStandby on
its client, and continue to attempt connecting to ZK.



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