Uploaded image for project: 'Hive'
  1. Hive
  2. HIVE-7063

Optimize for the Top N within a Group use case

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.14.0
    • Component/s: None
    • Labels:
      None

      Description

      It is common to rank within a Group/Partition and then only return the Top N entries within each Group.
      With Streaming mode for Windowing, we should push the post filter on the rank into the Windowing processing as a Limit expression.

        Attachments

        1. HIVE-7063.1.patch
          8 kB
          Harish Butani
        2. HIVE-7063.2.patch
          46 kB
          Harish Butani
        3. HIVE-7063.3.patch
          53 kB
          Harish Butani

          Activity

            People

            • Assignee:
              rhbutani Harish Butani
              Reporter:
              rhbutani Harish Butani
            • Votes:
              0 Vote for this issue
              Watchers:
              6 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: