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  1. Hadoop HDFS
  2. HDFS-445

pread() fails when cached block locations are no longer valid

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 0.20-append
    • 0.20-append, 0.21.0
    • None
    • None
    • 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      when cached block locations are no longer valid (e.g., datanodes restart on different ports), pread() will fail, whereas normal read() still succeeds through re-fetching of block locations from namenode (up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

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            kzhang Kan Zhang
            kzhang Kan Zhang
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            Dates

              Created:
              Updated:
              Resolved:

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