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https://issues.apache.org/jira/browse/HBASE-27146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17558732#comment-17558732
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Bryan Beaudreault commented on HBASE-27146:
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FYI I just pushed a fix for the branch-2* nightly failures. It's unrelated to
this jira.
> Avoid CellUtil.cloneRow in MetaCellComparator
> ---------------------------------------------
>
> Key: HBASE-27146
> URL: https://issues.apache.org/jira/browse/HBASE-27146
> Project: HBase
> Issue Type: Improvement
> Components: meta, Offheaping, Performance
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Major
> Fix For: 2.5.0, 3.0.0-alpha-4, 2.4.14
>
>
> In HBASE-26981, a flame graph shows that we spend a lot of CPUs in
> CellUtils.cloneXXX.
> Since we need to split the row to different parts when comparing, we can not
> use ByteBuffer compare directly, but as least, we should try to avoid copy
> the content when the Cell is stored in a ByteBuffer.
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