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  1. Hadoop Common
  2. HADOOP-227

Namespace check pointing is not performed until the namenode restarts.

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.2.0
    • Fix Version/s: 0.11.0
    • Component/s: None
    • Labels:
      None

      Description

      In current implementation when the name node starts, it reads its image file, then
      the edits file, and then saves the updated image back into the image file.
      The image file is never updated after that.
      In order to provide the system reliability reliability the namespace information should
      be check pointed periodically, and the edits file should be kept relatively small.

        Attachments

        1. periodiccheckpoint7.patch
          75 kB
          Dhruba Borthakur
        2. patch-async-checkpoints-0.9.0
          33 kB
          Philippe Gassmann
        3. patch-async-checkpoints-0.9.0
          33 kB
          Philippe Gassmann
        4. patch-async-checkpoints-0.9.0
          33 kB
          Philippe Gassmann

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              • Assignee:
                dhruba Dhruba Borthakur
                Reporter:
                shv Konstantin Shvachko
              • Votes:
                2 Vote for this issue
                Watchers:
                2 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: