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https://issues.apache.org/jira/browse/OOZIE-1905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14045389#comment-14045389
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Robert Kanter commented on OOZIE-1905:
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I did some checking on the internet, and i think even though these don't go
away, they are the parent znodes for the actual znodes that are used as locks;
it creates sequential ephemeral child znodes under that parent or something
like that. So I think the locks are actually released, they just leave behind
some benign znodes that only take up space.
We probably should clean these up, and it looks like the correct way to do this
is with Curator's Reaper. We already have OOZIE-1906 for that, so I think we
don't need this JIRA?
> ZK locks are not released after server shutdown
> -----------------------------------------------
>
> Key: OOZIE-1905
> URL: https://issues.apache.org/jira/browse/OOZIE-1905
> Project: Oozie
> Issue Type: Bug
> Components: HA
> Reporter: Purshotam Shah
>
> ZK locks are not released after server shutdown.
> Lock count before and after shutdown remain same.
> One of the reason is that, locks are not ephemeral. It should be ephemeral
> lock, so that if nodes goes down, locks will be automatically released
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