Hadoop HDFS
  1. Hadoop HDFS
  2. HDFS-445

pread() fails when cached block locations are no longer valid

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major 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      when cached block locations are no longer valid (e.g., datanodes restart on different ports), pread() will fail, whereas normal read() still succeeds through re-fetching of block locations from namenode (up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).

      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

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          People

          • Assignee:
            Kan Zhang
            Reporter:
            Kan Zhang
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            Dates

            • Created:
              Updated:
              Resolved:

              Development