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Posted to common-issues@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2015/05/06 20:12:01 UTC

[jira] [Updated] (HADOOP-10584) ActiveStandbyElector goes down if ZK quorum become unavailable

     [ https://issues.apache.org/jira/browse/HADOOP-10584?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Karthik Kambatla updated HADOOP-10584:
--------------------------------------
    Attachment: rm.log

Ran into this on one of our test clusters. Looks like this needs fixing. 

> 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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