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https://issues.apache.org/jira/browse/HBASE-8180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13611090#comment-13611090
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Jean-Marc Spaggiari commented on HBASE-8180:
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I agree. Good to add an example.
There is a typo. surprsingly => surprisingly
> [refGuide] Addition to performance.xml - use byte-array constants for CF, Cols
> ------------------------------------------------------------------------------
>
> Key: HBASE-8180
> URL: https://issues.apache.org/jira/browse/HBASE-8180
> Project: HBase
> Issue Type: Improvement
> Reporter: Doug Meil
> Assignee: Doug Meil
> Attachments: performance_hbase_8180.xml.patch
>
>
> I realized that we don't have anywhere in the refGuide to use byte-array
> constants for CF and Column names. Doing this .getBytes() in a loop
> (especially in a MapReduce job) is surprisingly expensive. Adding to the
> performance chapter.
> I am also going to update the other code examples in the book, but in another
> ticket.
> This is one of those "so obvious that it's not" kind of things.
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