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https://issues.apache.org/jira/browse/HBASE-14524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14989470#comment-14989470
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Lars Francke commented on HBASE-14524:
--------------------------------------

[~anoop.hbase] I didn't get around to it and it can be another few weeks or 
months, I'm swamped at the moment. Found this when debugging the read path for 
a customer and was surprised that for every new row those two values are the 
same. I have it on my radar though and will update here when I get around to it.

> Short-circuit comparison of rows in CellComparator
> --------------------------------------------------
>
>                 Key: HBASE-14524
>                 URL: https://issues.apache.org/jira/browse/HBASE-14524
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Lars Francke
>            Assignee: Lars Francke
>            Priority: Minor
>         Attachments: HBASE-14524.patch, HBASE-14524.patch
>
>
> {{CellComparator#compareRows}} compares two rows. For Scans and Gets these 
> objects can sometimes be exactly the same object.
> I see this (without fully understanding everything that's going on) for the 
> first cell in each row.
> In these circumstances I think it makes sense to short-circuit the comparison 
> (not do a byte comparison and class cast checks) and bail out early if the 
> objects are identical.



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