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https://issues.apache.org/jira/browse/HBASE-11870?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14173575#comment-14173575
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ramkrishna.s.vasudevan commented on HBASE-11870:
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+1 on patch.
bq.All other parts, this Cell refers to the original Cell.
For all other parts this cell referts to the original. or just say all other
parts refer to the original cell.
> Optimization : Avoid copy of key and value for tags addition in AC and VC
> -------------------------------------------------------------------------
>
> Key: HBASE-11870
> URL: https://issues.apache.org/jira/browse/HBASE-11870
> Project: HBase
> Issue Type: Improvement
> Components: Performance, security
> Affects Versions: 0.98.0
> Reporter: Anoop Sam John
> Assignee: Anoop Sam John
> Attachments: HBASE-11870.patch
>
>
> In AC and VC we have to add the per cell ACL tags/ visibility tags to Cells.
> We get KeyValue objects and which need one backing array with key,value and
> tags. So in order to add a tag we have to recreate buffer the and copy the
> entire key , value and tags. We can avoid this
> Create a new Cell impl which wraps the original Cell and fro the non tag
> parts just refer this old buffer.
> This will contain a byte[] state for the tags part.
> Also we have to ensure we deal with Cells n write path not KV.
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