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https://issues.apache.org/jira/browse/HBASE-13496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14505302#comment-14505302
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Anoop Sam John commented on HBASE-13496:
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[~stack]
I have evidence from the micro test case where I do compare of 2 byte[]s with
and without patched code.
byte[]s have equal length of 135 bytes and both are equal too.( I want to make
sure the loop executes all cycles). 10 million times am doing the compare
calls. Doing tests in Java 8
This gives an avg 30% improvement.
But not done the cluster testing
> Make Bytes$LexicographicalComparerHolder$UnsafeComparer::compareTo inlineable
> -----------------------------------------------------------------------------
>
> Key: HBASE-13496
> URL: https://issues.apache.org/jira/browse/HBASE-13496
> Project: HBase
> Issue Type: Sub-task
> Components: Scanners
> Reporter: Anoop Sam John
> Assignee: Anoop Sam John
> Fix For: 2.0.0, 1.2.0
>
> Attachments: HBASE-13496.patch
>
>
> While testing with some other perf comparisons I have noticed that the above
> method (which is very hot in read path) is not getting inline
> bq.@ 16
> org.apache.hadoop.hbase.util.Bytes$LexicographicalComparerHolder$UnsafeComparer::compareTo
> (364 bytes) hot method too big
> We can do minor refactoring to make it inlineable.
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