[jira] [Commented] (BOOKKEEPER-417) Hierarchical zk underreplication manager should clean up its hierarchy when done to allow for fast acquisition of underreplicated entries

["Uma Maheswara Rao G (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BOOKKEEPER-417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13469570#comment-13469570 ] 

Uma Maheswara Rao G commented on BOOKKEEPER-417:
------------------------------------------------

Yeah, I have seen this while debugging. Thanks for filing the JIRA. I think, functionally no harm, but we have to fix this to avoid unnecessary traversals.
                
> Hierarchical zk underreplication manager should clean up its hierarchy when done to allow for fast acquisition of underreplicated entries
> -----------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: BOOKKEEPER-417
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-417
>             Project: Bookkeeper
>          Issue Type: Sub-task
>          Components: bookkeeper-auto-recovery
>            Reporter: Ivan Kelly
>            Assignee: Ivan Kelly
>             Fix For: 4.2.0
>
>
> As we traverse the hierarchy to find a underreplicated fragment, leaving the hierarchy will cause the traversal to search in many empty znodes.

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