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  1. Hadoop HDFS
  2. HDFS-5182 BlockReaderLocal must allow zero-copy reads only when the DN believes it's valid
  3. HDFS-6046

add dfs.client.mmap.enabled

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    Details

    • Type: Sub-task
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.4.0
    • Fix Version/s: 2.4.0
    • Component/s: hdfs-client
    • Labels:
      None
    • Target Version/s:
    • Hadoop Flags:
      Reviewed

      Description

      It would be nice to have a configuration variable, dfs.client.mmap.enabled. which would disable mmap reads in the client. This could come in handy for debugging or performance benchmarking.

        Attachments

        1. HDFS-6046.003.patch
          8 kB
          Colin McCabe
        2. HDFS-6046.002.patch
          8 kB
          Colin McCabe
        3. HDFS-6046.001.patch
          6 kB
          Colin McCabe

          Activity

            People

            • Assignee:
              cmccabe Colin McCabe
              Reporter:
              cmccabe Colin McCabe
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              Dates

              • Created:
                Updated:
                Resolved: