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https://issues.apache.org/jira/browse/HDFS-12046?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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SammiChen reassigned HDFS-12046:
--------------------------------

    Assignee: SammiChen  (was: luhuichun)

> Hadoop CRC implementation using Intel ISA-L library
> ---------------------------------------------------
>
>                 Key: HDFS-12046
>                 URL: https://issues.apache.org/jira/browse/HDFS-12046
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: luhuichun
>            Assignee: SammiChen
>         Attachments: HDFS-12046-001.patch, ISA-L CRC Performance Report using 
> intel ISA-L.pdf
>
>
> Intel ISA-L open source library provides set of highly optimized functions 
> for RAID, erasure code, CRC, cryptographic hash, encryption, and compression. 
> Ref. https://github.com/01org/isa-l. HDFS-EC has already integrated ISA-L and 
> added the necessary building options support for Hadoop. For Hadoop CRC, we 
> recently explored more, developing a Hadoop CRC using Intel ISA-L, performing 
> a test on Broadwell and Skylake servers, comparing the performance against 
> Hadoop native CRC. On Broadwell/Skylake, ISA-L CRC has about 8%~ performance 
> gain over Hadoop native CRC. We suggest adding a new Hadoop native CRC using 
> the ISA-L library, the extra advantage is it’s already optimized when we 
> upgrade to new servers and Hadoop developers don’t have to maintain their own 
> bunch of ASM codes.



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