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https://issues.apache.org/jira/browse/HBASE-5941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13611992#comment-13611992
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Amitanand Aiyer commented on HBASE-5941:
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http://svn.apache.org/viewvc?view=revision&revision=r1338352
> improve multiDelete performance by grabbing locks ahead of time
> ---------------------------------------------------------------
>
> Key: HBASE-5941
> URL: https://issues.apache.org/jira/browse/HBASE-5941
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Affects Versions: 0.89.20100924, 0.89-fb, 0.94.1
> Reporter: Amitanand Aiyer
> Assignee: Amitanand Aiyer
> Priority: Minor
> Fix For: 0.89-fb
>
> Attachments: 5941.txt
>
>
> Ning reported that the performance of deletes is slower than the performance
> of Puts. This should not be the case.
> On digging up, it turns out that there is a difference between multiPut and
> multiDelete in the way we grab locks.
> multiPut grabs all the locks optimistically and processes the puts one by
> one. multiDelete grabs locks and releases
> them one at a time, for each delete operation, as if it were done
> separately. This may be causing a performance
> slow down for deletes. Trying to improve it.
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