Uploaded image for project: 'Hadoop HDFS'
  1. Hadoop HDFS
  2. HDFS-3718

Datanode won't shutdown because of runaway DataBlockScanner thread

Log workAgile BoardRank to TopRank to BottomAttach filesAttach ScreenshotBulk Copy AttachmentsBulk Move AttachmentsVotersWatch issueWatchersCreate sub-taskConvert to sub-taskMoveLinkCloneLabelsUpdate Comment AuthorReplace String in CommentUpdate Comment VisibilityDelete Comments
    XMLWordPrintableJSON

Details

    • Bug
    • Status: Closed
    • Critical
    • Resolution: Fixed
    • 2.0.1-alpha
    • 0.23.3, 2.0.2-alpha
    • datanode
    • None
    • Reviewed

    Description

      Datanode sometimes does not shutdown because the block pool scanner thread keeps running. It prints out "Starting a new period" every five seconds, even after shutdown() is called. Somehow the interrupt is missed.

      DataBlockScanner will also terminate if datanode.shouldRun is false, but in DataNode#shutdown, DataBlockScanner#shutdown() is invoked before it is being set to false.

      Is there any reason why datanode.shouldRun is set to false later?

      Attachments

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

          People

            kihwal Kihwal Lee Assign to me
            kihwal Kihwal Lee
            Votes:
            0 Vote for this issue
            Watchers:
            10 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved:

              Slack

                Issue deployment