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https://issues.apache.org/jira/browse/HBASE-4626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13132318#comment-13132318
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Lars Hofhansl commented on HBASE-4626:
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In the widest sense this could be considered an incompatible change.
WritableByteArrayComparable is part of the public API and a client might have
subclassed WritableByteArrayComparable in order pass it to a Filter. That would
break now, as the client has to implement compareTo(byte[], int offset, int
length) instead of compareTo(byte[]).
I'll hold off committing this to 0.92.
> Filters unnecessarily copy byte arrays...
> -----------------------------------------
>
> Key: HBASE-4626
> URL: https://issues.apache.org/jira/browse/HBASE-4626
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Reporter: Lars Hofhansl
> Assignee: Lars Hofhansl
> Fix For: 0.92.0, 0.94.0
>
> Attachments: 4626-v2.txt, 4626-v3.txt, 4626.txt
>
>
> Just looked at SingleCol and ValueFilter... And on every column compared they
> create a copy of the column and/or value portion of the KV.
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