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Posted to commits@cassandra.apache.org by "Yingqi Lu (JIRA)" <ji...@apache.org> on 2017/09/27 06:05:00 UTC

[jira] [Created] (CASSANDRA-13908) Add JDK9 new CRC32C checksum

Yingqi Lu created CASSANDRA-13908:
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             Summary: Add JDK9 new CRC32C checksum
                 Key: CASSANDRA-13908
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13908
             Project: Cassandra
          Issue Type: Improvement
          Components: Local Write-Read Paths
            Reporter: Yingqi Lu


Dear All,

JDK9 introduces a new API java.util.zip.CRC32C. It has an optimized implementation using IA crc32c instruction. Our early data show CRC32C provides additional performance benefits over CRC32 checksum.

We are proposing to add CRC32C as one of the checksum types in addition to Adler32 and CRC32. Performance data and prototype code changes will be submitted here soon. At the meantime, please feel free to provide your feedback and comments.

Thanks,
Yingqi Lu



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