Details
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Improvement
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Status: Patch Available
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Major
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Resolution: Unresolved
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Description
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.