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  1. Hadoop HDFS
  2. HDFS-3110

libhdfs implementation of direct read API

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 2.0.2-alpha
    • libhdfs, performance
    • None
    • Reviewed
    • libhdfs is enhanced to read directly into user-supplied buffers when possible, reducing the number of memory copies.

    Description

      Once HDFS-2834 gets committed, we can add support for the new API to libhdfs, which leads to significant performance increases when reading local data from C.

      Attachments

        1. HDFS-3110.0.patch
          4 kB
          Henry Robinson
        2. HDFS-3110.1.patch
          13 kB
          Henry Robinson
        3. HDFS-3110.2.patch
          20 kB
          Henry Robinson
        4. HDFS-3110.3.patch
          19 kB
          Henry Robinson
        5. HDFS-3110.4.patch
          20 kB
          Henry Robinson
        6. HDFS-3110.5.patch
          20 kB
          Henry Robinson

        Issue Links

          depends upon

          Improvement - An improvement or enhancement to an existing feature or task. HDFS-2834 ByteBuffer-based read API for DFSInputStream

          • Major - Major loss of function.
          • Closed

          Activity

            People

              henryr Henry Robinson
              henryr Henry Robinson
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              Dates

                Created:
                Updated:
                Resolved: