Uploaded image for project: 'Hadoop Common'
  1. Hadoop Common
  2. HADOOP-3943

NetworkTopology.pseudoSortByDistance does not need to be a synchronized method

VotersWatch issueWatchersCreate sub-taskLinkCloneUpdate Comment AuthorReplace String in CommentUpdate Comment VisibilityDelete Comments
    XMLWordPrintableJSON

Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.19.0
    • None
    • None
    • Reviewed

    Description

      When all requests to namenode are read, most handlers block on NetworkTopology object lock when sorting replicas. Removing this necessary lock would reduce the contention in namenode and therefore improve its throughput.

      Attachments

        1. sortDistance.patch
          0.6 kB
          Hairong Kuang

        Activity
          This comment will be Viewable by All Users Viewable by All Users
          Cancel

          People

            hairong Hairong Kuang
            hairong Hairong Kuang
            Votes:
            0 Vote for this issue
            Watchers:
            1 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved:

              Slack

                Issue deployment