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Ran 02 Apr 2018 02:05PM UTC

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Files 399

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Build # 40

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jenkins

Committed by Sijie Guo

Commit Message

Make CRC32C_HASH a final static variable and log when we cannot use native crc32c library

For CRC32c there is a marked performance difference when the JNI library is available versus when it's not, since the fallback involves creating many `ByteBuffer`s and copy payloads.

Additionally we should set the static variable to `final` so the optimizer can get rid of the `(CRC32C_HASH instanceof Sse42Crc32C)` checks.

Author: Matteo Merli <mmerli@apache.org>

Reviewers: Enrico Olivelli <eolivelli@gmail.com>, Jia Zhai <None>, Sijie Guo <sijie@apache.org>

This closes #1303 from merlimat/crc-final

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23026 of 31801 relevant lines covered (72.41%)

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ID	Job ID	Ran	Files	Coverage
1	40.1	02 Apr 2018 02:05PM UTC	0	72.41

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