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Date: Thu, 28 Jun 2012 03:33:43 +0000 (UTC)
From: "Anoop Sam John (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HBASE-6284) Introduce
 HRegion#doMiniBatchDelete()
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    [ https://issues.apache.org/jira/browse/HBASE-6284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13402810#comment-13402810 ] 

Anoop Sam John commented on HBASE-6284:
---------------------------------------

Ok Ted.. I will do that... :)
                
> Introduce HRegion#doMiniBatchDelete()
> -------------------------------------
>
>                 Key: HBASE-6284
>                 URL: https://issues.apache.org/jira/browse/HBASE-6284
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Zhihong Ted Yu
>            Assignee: Anoop Sam John
>
> From Anoop under thread 'Can there be a doMiniBatchDelete in HRegion':
> The HTable#delete(List<Delete>) groups the Deletes for the same RS and make one n/w call only. But within the RS, there will be N number of delete calls on the region one by one. This will include N number of HLog write and sync. If this also can be grouped can we get better performance for the multi row delete.
> I have made the new miniBatchDelete () and made the HTable#delete(List<Delete>) to call this new batch delete.
> Just tested initially with the one node cluster.  In that itself I am getting a performance boost which is very much promising.
> Only one CF and qualifier.
> 10K total rows delete with a batch of 100 deletes. Only deletes happening on the table from one thread.
> With the new way the net time taken is reduced by more than 1/10
> Will test in a 4 node cluster also. I think it will worth doing this change.

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