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Todd Lipcon commented on HDFS-3528: ----------------------------------- Cool, thanks for starting on this. For the full improvement on the write path we also will need a "bulk_calculate_crc32" equivalent to run on the client side. Might make sense to split it up, though. > 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: datanode, hdfs-client, performance > Affects Versions: 2.0.0-alpha > Reporter: Todd Lipcon > Assignee: James Thomas > Attachments: HDFS-3528.patch > > > 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. -- This message was sent by Atlassian JIRA (v6.2#6252)