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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7309) Metrics refresh-task is not canceled when regions are closed, leaking HRegion objects
Date Sun, 09 Dec 2012 22:55:21 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13527645#comment-13527645
] 

Hudson commented on HBASE-7309:
-------------------------------

Integrated in HBase-TRUNK #3602 (See [https://builds.apache.org/job/HBase-TRUNK/3602/])
    HBASE-7309 Metrics refresh-task is not canceled when regions are closed, leaking HRegion
objects (Adrian Muraru) (Revision 1419172)

     Result = FAILURE
tedyu : 
Files : 
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionWrapperImpl.java

                
> Metrics refresh-task is not canceled when regions are closed, leaking HRegion objects
> -------------------------------------------------------------------------------------
>
>                 Key: HBASE-7309
>                 URL: https://issues.apache.org/jira/browse/HBASE-7309
>             Project: HBase
>          Issue Type: Bug
>          Components: metrics, regionserver
>    Affects Versions: 0.96.0
>            Reporter: Adrian Muraru
>            Assignee: Adrian Muraru
>            Priority: Critical
>             Fix For: 0.96.0
>
>         Attachments: HBASE-7309_v1.patch, HBASE-7309_v2.patch
>
>
> While investigating HBASE-7205 by repeatedly enabling and disabling one table having
100 regions I noticed that closed HRegion objects are kept forever in memory. 
> The memory analyzer tool indicates a reference to HRegion object in metrics refresh-task
({{MetricsRegionWrapperImpl.HRegionMetricsWrapperRunnable}}) that prevents the HRegion object
to be collected.

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