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  1. Hadoop HDFS
  2. HDFS-445

pread() fails when cached block locations are no longer valid

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.20-append
    • Fix Version/s: 0.20-append, 0.21.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      when cached block locations are no longer valid (e.g., datanodes restart on different ports), pread() will fail, whereas normal read() still succeeds through re-fetching of block locations from namenode (up to a max number of times).

        Attachments

        1. 445-06.patch
          7 kB
          Kan Zhang
        2. 445-08.patch
          9 kB
          Kan Zhang
        3. HDFS-445-0_20.2.patch
          10 kB
          Jitendra Nath Pandey
        4. hdfs-445-0.20-append.txt
          8 kB
          Todd Lipcon

          Activity

            People

            • Assignee:
              kzhang Kan Zhang
              Reporter:
              kzhang Kan Zhang
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              Dates

              • Created:
                Updated:
                Resolved: