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From "Bob Copeland (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4956) Control direct memory buffer consumption by HBaseClient
Date Thu, 19 Jul 2012 16:06:36 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13418394#comment-13418394
] 

Bob Copeland commented on HBASE-4956:
-------------------------------------

Yeah, buffer size doesn't really matter to our workload so out of laziness I stuck with 8k,
but a larger one should be OK.  Worth noting that 8k is better than the full length (i.e.
unpatched) in my tests, presumably because of the additional allocation overhead.
                
> Control direct memory buffer consumption by HBaseClient
> -------------------------------------------------------
>
>                 Key: HBASE-4956
>                 URL: https://issues.apache.org/jira/browse/HBASE-4956
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Ted Yu
>             Fix For: 0.96.0, 0.94.1
>
>         Attachments: 4956.txt, thread_get.rb
>
>
> As Jonathan explained here https://groups.google.com/group/asynchbase/browse_thread/thread/c45bc7ba788b2357?pli=1
, standard hbase client inadvertently consumes large amount of direct memory.
> We should consider using netty for NIO-related tasks.

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