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Posted to commits@cassandra.apache.org by "Jason Brown (JIRA)" <ji...@apache.org> on 2014/06/17 00:53:01 UTC

[jira] [Created] (CASSANDRA-7404) Use direct i/o for sequential operations (compaction/streaming)

Jason Brown created CASSANDRA-7404:
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             Summary: Use direct i/o for sequential operations (compaction/streaming)
                 Key: CASSANDRA-7404
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7404
             Project: Cassandra
          Issue Type: Improvement
          Components: Core
            Reporter: Jason Brown
            Assignee: Jason Brown
             Fix For: 3.0


Investigate using linux's direct i/o for operations where we read sequentially through a file (repair and bootstrap streaming, compaction reads, and so on). Direct i/o does not go through the kernel page page, so it should leave the hot cache pages unaffected.



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