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https://issues.apache.org/jira/browse/HDFS-8198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16269608#comment-16269608
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Lei (Eddy) Xu commented on HDFS-8198:
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>From our experience, the codec performance is negligible on the IO path,
>comparing to network and disks overhead.
We dont have existing metrics of the time spent on RS encoding / decoding, as
these happen on client side most of the time, so it is not convenient to
expose that via JMX. If it is feasible to your environment, you can checkout
{{RawErasureEncoder / Decoder}} and add some measurements there, re-compile it
and replace JARs in your environment for today.
[~xiaochen] is also looking into exposing these client-side metrics, I believe
him can give a better answer here.
> Erasure Coding: system test of TeraSort
> ---------------------------------------
>
> Key: HDFS-8198
> URL: https://issues.apache.org/jira/browse/HDFS-8198
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: HDFS-7285
> Reporter: Kai Sasaki
> Attachments: ec.out, replication.out
>
>
> Functional system test of TeraSort on EC files.
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