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Date: Fri, 30 Sep 2011 19:31:45 +0000 (UTC)
From: "Jonathan Gray (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HBASE-4487) The increment operation can release
 the rowlock before sync-ing the Hlog
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    [ https://issues.apache.org/jira/browse/HBASE-4487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13118311#comment-13118311 ] 

Jonathan Gray commented on HBASE-4487:
--------------------------------------

+1 as well.  And agree with your assessment above, Stack.  Potential fatter grouping of increments and significant improvement of per-row throughput.

Looking forward to getting this working for Put/MultiPut!  Nice work, Dhruba.
                
> The increment operation can release the rowlock before sync-ing the Hlog
> ------------------------------------------------------------------------
>
>                 Key: HBASE-4487
>                 URL: https://issues.apache.org/jira/browse/HBASE-4487
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>             Fix For: 0.94.0
>
>         Attachments: 4487-v7.txt, appendNoSync4.txt, appendNoSync5.txt, appendNoSync6.txt
>
>
> This allows for better throughput when there are hot rows.I have seen this change make a single row update improve from 400 increments/sec/server to 4000 increments/sec/server.

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