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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7205) Coprocessor classloader is replicated for all regions in the HRegionServer
Date Wed, 12 Dec 2012 12:13:38 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13529882#comment-13529882
] 

Hudson commented on HBASE-7205:
-------------------------------

Integrated in HBase-TRUNK-on-Hadoop-2.0.0 #293 (See [https://builds.apache.org/job/HBase-TRUNK-on-Hadoop-2.0.0/293/])
    HBASE-7205 Coprocessor classloader is replicated for all regions in the HRegionServer
(Ted Yu and Adrian Muraru) (Revision 1420480)

     Result = FAILURE
tedyu : 
Files : 
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/CoprocessorClassLoader.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestClassLoading.java

                
> Coprocessor classloader is replicated for all regions in the HRegionServer
> --------------------------------------------------------------------------
>
>                 Key: HBASE-7205
>                 URL: https://issues.apache.org/jira/browse/HBASE-7205
>             Project: HBase
>          Issue Type: Bug
>          Components: Coprocessors
>    Affects Versions: 0.92.2, 0.94.2
>            Reporter: Adrian Muraru
>            Assignee: Ted Yu
>            Priority: Critical
>             Fix For: 0.96.0, 0.94.4
>
>         Attachments: 7205-0.94.txt, 7205-v10.txt, 7205-v1.txt, 7205-v3.txt, 7205-v4.txt,
7205-v5.txt, 7205-v6.txt, 7205-v7.txt, 7205-v8.txt, 7205-v9.txt, HBASE-7205_v2.patch
>
>
> HBASE-6308 introduced a new custom CoprocessorClassLoader to load the coprocessor classes
and a new instance of this CL is created for each single HRegion opened. This leads to OOME-PermGen
when the number of regions go above hundres / region server. 
> Having the table coprocessor jailed in a separate classloader is good however we should
create only one for all regions of a table in each HRS.

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