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https://issues.apache.org/jira/browse/HDFS-8425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14568676#comment-14568676
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Kai Zheng commented on HDFS-8425:
---------------------------------

Just uploaded a simple performance test report in HADOOP-11540 comparing the 
native coder based on Intel ISA-L with the Java coder, and we can see that the 
performance gain can be from 10X up to 35X. Hope this can resolve the 
performance overhead. Sure we need to optimize and tune further after the basic 
codes ready.

> [umbrella] Performance tuning and bug fixing for system tests for EC feature
> ----------------------------------------------------------------------------
>
>                 Key: HDFS-8425
>                 URL: https://issues.apache.org/jira/browse/HDFS-8425
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>    Affects Versions: HDFS-7285
>            Reporter: GAO Rui
>         Attachments: testClientWriteReadFile_v1.pdf
>
>
> This jira is {{umbrella}} jira for bug fixing of  System tests for EC 
> feature. 



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