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https://issues.apache.org/jira/browse/HADOOP-10095?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13821492#comment-13821492
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Karthik Kambatla commented on HADOOP-10095:
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Looks good to me. +1.
> Performance improvement in CodecPool
> ------------------------------------
>
> Key: HADOOP-10095
> URL: https://issues.apache.org/jira/browse/HADOOP-10095
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 3.0.0, 2.2.0
> Reporter: Nicolas Liochon
> Assignee: Nicolas Liochon
> Priority: Minor
> Fix For: 3.0.0, 2.2.1
>
> Attachments: 10095.v1.patch
>
>
> CodecPool shows up when profiling HBase with a mixed workload (it says we
> spend 1% of the time there).
> It could be a profiler side effect, but on the other hand we can save some
> 'Map#contains'.
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