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  1. Hadoop HDFS
  2. HDFS-4995

Make getContentSummary() less expensive

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 0.23.9, 2.3.0
    • 0.23.10, 2.3.0
    • namenode
    • None
    • Reviewed

    Description

      When users call du or count DFS command, getContentSummary() method is called against namenode. If the directory has many directories and files, it could hold the namesystem lock for a long time. We've seen it taking over 20 seconds. Namenode should not allow regular users to cause extended locking.

      Attachments

        1. HDFS-4995.trunk.3.patch
          25 kB
          Kihwal Lee
        2. HDFS-4995.branch-0.23.3.patch
          17 kB
          Kihwal Lee
        3. HDFS-4995.trunk.2.patch
          29 kB
          Kihwal Lee
        4. HDFS-4995.trunk.patch
          28 kB
          Kihwal Lee
        5. HDFS-4995.trunk1.patch
          28 kB
          Kihwal Lee

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. HDFS-8898 Create API and command-line argument to get quota and quota usage without detailed content summary

          • Major - Major loss of function.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. HDFS-1658 A less expensive way to figure out directory size

          • Major - Major loss of function.
          • Open

          Activity

            People

              kihwal Kihwal Lee
              kihwal Kihwal Lee
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              Dates

                Created:
                Updated:
                Resolved: