Uploaded image for project: 'Hive'
  1. Hive
  2. HIVE-17936

Dynamic Semijoin Reduction : markSemiJoinForDPP marks unwanted semijoin branches

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

Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 3.0.0
    • None

    Description

      In method markSemiJoinForDPP (HIVE-17399), the nDVs comparison should not have equality as there is a chance that the values are same on both sides and the branch is still marked as good when it shouldn't be.
      Add a configurable factor to see how useful this is if nDVs on smaller side are only slightly less than that on TS side.

      Attachments

        1. HIVE-17936.3.patch
          20 kB
          Deepak Jaiswal
        2. HIVE-17936.2.patch
          20 kB
          Deepak Jaiswal
        3. HIVE-17936.1.patch
          20 kB
          Deepak Jaiswal

        Issue Links

        Activity

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

          People

            djaiswal Deepak Jaiswal Assign to me
            djaiswal Deepak Jaiswal
            Votes:
            0 Vote for this issue
            Watchers:
            3 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved:

              Slack

                Issue deployment