Uploaded image for project: 'Hadoop HDFS'
  1. Hadoop HDFS
  2. HDFS-4995

Make getContentSummary() less expensive

VotersStop watchingWatchersCreate sub-taskLinkCloneUpdate Comment AuthorReplace String in CommentUpdate Comment VisibilityDelete Comments
    XMLWordPrintableJSON

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.branch-0.23.3.patch
          17 kB
          Kihwal Lee
        2. HDFS-4995.trunk.2.patch
          29 kB
          Kihwal Lee
        3. HDFS-4995.trunk.3.patch
          25 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
          This comment will be Viewable by All Users Viewable by All Users
          Cancel

          People

            kihwal Kihwal Lee
            kihwal Kihwal Lee
            Votes:
            0 Vote for this issue
            Watchers:
            11 Stop watching this issue

            Dates

              Created:
              Updated:
              Resolved:

              Slack

                Issue deployment