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From "Lars Hofhansl (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5073) Registered listeners not getting removed leading to memory leak in HBaseAdmin
Date Tue, 20 Dec 2011 19:53:30 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5073?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13173462#comment-13173462
] 

Lars Hofhansl commented on HBASE-5073:
--------------------------------------

+1

Maybe in another jira we should either disallow passing a Watcher (since unremovable listeners
will be added to it), or clean up the listeners. That applies to 0.92 and trunk as well.
                
> Registered listeners not getting removed leading to memory leak in HBaseAdmin
> -----------------------------------------------------------------------------
>
>                 Key: HBASE-5073
>                 URL: https://issues.apache.org/jira/browse/HBASE-5073
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.90.4
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 0.90.5
>
>         Attachments: HBASE-5073.patch
>
>
> HBaseAdmin apis like tableExists(), flush, split, closeRegion uses catalog tracker. 
Every time Root node tracker and meta node tracker are started and a listener is registered.
 But after the operations are performed the listeners are not getting removed. Hence if the
admin apis are consistently used then it may lead to memory leak.  

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