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From "Ted Yu (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4641) Block cache can be mistakenly instantiated on Master
Date Fri, 28 Oct 2011 21:44:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13138800#comment-13138800
] 

Ted Yu commented on HBASE-4641:
-------------------------------

One benefit for patch v4 is that it allows different components to make decisions based on
whether JVM is for master or region server.
We can revisit this topic when more config parameters are set in this regard.
                
> Block cache can be mistakenly instantiated on Master
> ----------------------------------------------------
>
>                 Key: HBASE-4641
>                 URL: https://issues.apache.org/jira/browse/HBASE-4641
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.92.0, 0.94.0
>            Reporter: Jonathan Gray
>            Assignee: Jonathan Gray
>            Priority: Critical
>             Fix For: 0.92.0
>
>         Attachments: 4641-suggestion-v3.txt, 4641-v4.txt, HBASE-4641-v1.patch, HBASE-4641-v2.patch
>
>
> After changes in the block cache instantiation over in HBASE-4422, it looks like the
HMaster can now end up with a block cache instantiated.  Not a huge deal but prevents the
process from shutting down properly.

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