Uploaded image for project: 'Hadoop Common'
  1. Hadoop Common
  2. HADOOP-227

Namespace check pointing is not performed until the namenode restarts.

    XMLWordPrintableJSON

Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 0.2.0
    • 0.11.0
    • None
    • 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

        Issue Links

          Activity

            People

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

              Dates

                Created:
                Updated:
                Resolved: