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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10182) ZKFailoverController should implicitly ensure that ZK is formatted
Date Thu, 26 Dec 2013 22:17:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13857125#comment-13857125
] 

Karthik Kambatla commented on HADOOP-10182:
-------------------------------------------

Calling {{ActiveStandbyElector#ensureParentZNode}} immediately after creating the elector
sounds reasonable to me. If that is the intention here, I agree it is a good idea and no need
to add a config. Would modify the title/ summary in that case.

> ZKFailoverController should implicitly ensure that ZK is formatted
> ------------------------------------------------------------------
>
>                 Key: HADOOP-10182
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10182
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ha
>    Affects Versions: 2.3.0
>            Reporter: Ivan Mitic
>            Assignee: Ivan Mitic
>
> Currently, a manual ZK format step is necessary before ZKFailoverController can join
leader election. This generally adds overhead on what is needed to configure an HA cluster.
My proposal is to always ensure that parent znodes exist during startup of the ZKFailoverController.
If folks do not want to make this a default, we can put it under a config.



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