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https://issues.apache.org/jira/browse/HBASE-1337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12720723#action_12720723
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Erik Holstad commented on HBASE-1337:
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I think we can, I think it is good for now, we can keep it in mind for going
the extra mile when we have everything else under control for like 0.21 or so.
> Using byte[] compare instead of long compare when needed to convert to long
> first.
> ----------------------------------------------------------------------------------
>
> Key: HBASE-1337
> URL: https://issues.apache.org/jira/browse/HBASE-1337
> Project: Hadoop HBase
> Issue Type: Improvement
> Affects Versions: 0.20.0
> Reporter: Erik Holstad
> Priority: Minor
>
> When comparing timestamps in the KeyValues tests have shown that it is faster
> to do a byte[] compare on the timestamps rather than converting to longs and
> then do the long compare.
> In the case where you have one byte[] and one long that you need to compare
> it is better to convert both to long and do the long compare.
> Some numbers:
> Compare byte[] to byte[] timer 1042 ns
> Compare bytes2long to bytes2long timer 3143 ns
> Compare long to long timer 281 ns
> bytes2long timer 1328 ns
> long2bytes timer 1349 ns
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