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Posted to hdfs-dev@hadoop.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2012/06/13 00:24:43 UTC

[jira] [Created] (HDFS-3528) Use native CRC32 in DFS write path

Todd Lipcon created HDFS-3528:
---------------------------------

             Summary: Use native CRC32 in DFS write path
                 Key: HDFS-3528
                 URL: https://issues.apache.org/jira/browse/HDFS-3528
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: data-node, hdfs client, performance
    Affects Versions: 2.0.0-alpha
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon


HDFS-2080 improved the CPU efficiency of the read path by using native SSE-enabled code for CRC verification. Benchmarks of the write path show that it's often CPU bound by checksums as well, so we should make the same improvement there.

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