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https://issues.apache.org/jira/browse/HBASE-16691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15525928#comment-15525928
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binlijin commented on HBASE-16691:
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Ok, done, see HBASE-16691-master_v2.patch.
> Optimize KeyOnlyFilter by utilizing KeyOnlyCell
> -----------------------------------------------
>
> Key: HBASE-16691
> URL: https://issues.apache.org/jira/browse/HBASE-16691
> Project: HBase
> Issue Type: Improvement
> Reporter: binlijin
> Assignee: binlijin
> Fix For: 2.0.0
>
> Attachments: HBASE-16691-addendum.patch, HBASE-16691-master.patch,
> HBASE-16691-master_v2.patch
>
>
> In KeyOnlyFilter#transformCell will return a KeyOnlyCell that have no value
> or has valueLength as value, current will copy all row keys into a new byte[]
> and new a KeyValue, we can eliminate the copy and have a wrap KeyOnlyCell
> that ignore the cell's value.
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