Hadoop Common
  1. Hadoop Common
  2. HADOOP-3369

Fast block processing during name-node startup.

    Details

    • Type: Improvement Improvement
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 0.17.0
    • Fix Version/s: 0.18.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      The block report processing during the startup period should be optimized.
      As noted in HADOOP-3022 during cluster startup all blocks are under-replicated
      because they have not been reported by name-nodes yet.
      Currently, we routinely move blocks to the neededReplications queue when they
      are first reported and then remove them from the list when other nodes report it.
      In ideal situation we end up adding all blocks into neededReplications queue first
      only in order to remove all of them in the end.

      1. fastBlockReports.patch
        8 kB
        Konstantin Shvachko
      2. fastBlockReports.patch
        9 kB
        Konstantin Shvachko

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            • Assignee:
              Konstantin Shvachko
              Reporter:
              Konstantin Shvachko
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              Dates

              • Created:
                Updated:
                Resolved:

                Development