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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13885) ZK watches leaks during snapshots
Date Fri, 12 Jun 2015 23:53:01 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14584284#comment-14584284
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Lars Hofhansl commented on HBASE-13885:
---------------------------------------

[~apurtell], FYI for 0.98.14. Or if we want, since this is pretty bad we can pull it into
the RC (0.98.14 seems fine, though)

> ZK watches leaks during snapshots
> ---------------------------------
>
>                 Key: HBASE-13885
>                 URL: https://issues.apache.org/jira/browse/HBASE-13885
>             Project: HBase
>          Issue Type: Bug
>          Components: snapshots
>    Affects Versions: 0.98.12
>            Reporter: Abhishek Singh Chouhan
>            Priority: Critical
>         Attachments: 13885-0.98-v2.txt, 13885-0.98-v3.txt
>
>
> When taking snapshot of a table a watcher over /hbase/online-snapshot/abort/snapshot-name
is created which is never cleared when the snapshot is successful. If we use snapshots to
take backups daily we accumulate a lot of watches.
> Steps to reproduce -
> 1) Take snapshot of a table - snapshot 'table_1', 'abc'
> 2) Run the following on zk node or alternatively observe zk watches metric
>  echo "wchc" | nc localhost 2181
> /hbase/online-snapshot/abort/abc can be found.



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