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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13885) ZK watches leaks during snapshots
Date Tue, 16 Jun 2015 19:58:03 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14588658#comment-14588658
] 

Andrew Purtell commented on HBASE-13885:
----------------------------------------

bq.  I do think the committer should commit to all branches and not push that onto the RM.
I agree, but as 0.98 RM I'm giving people an out :-) 

> 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
>            Assignee: Lars Hofhansl
>            Priority: Critical
>             Fix For: 2.0.0, 0.98.14, 1.0.2, 1.2.0, 1.1.1, 1.3.0
>
>         Attachments: 13885-0.98-v2.txt, 13885-0.98-v3.txt, 13885-master.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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