Uploaded image for project: 'Drivers'
  1. Drivers
  2. DRIVERS-1612

Investigate changes in PM-1938: Approximate count distinct accumulator

    XMLWordPrintableJSON

Details

    • Icon: Epic Epic
    • Resolution: Won't Do
    • Icon: Major - P3 Major - P3
    • None
    • None
    • None
    • $i18n.getText("admin.common.words.hide")
      Key Status/Resolution FixVersion
      CSHARP-3224 Blocked
      JAVA-3864 Blocked
      $i18n.getText("admin.common.words.show")
      #scriptField, #scriptField *{ border: 1px solid black; } #scriptField{ border-collapse: collapse; } #scriptField td { text-align: center; /* Center-align text in table cells */ } #scriptField td.key { text-align: left; /* Left-align text in the Key column */ } #scriptField a { text-decoration: none; /* Remove underlines from links */ border: none; /* Remove border from links */ } /* Add green background color to cells with FixVersion */ #scriptField td.hasFixVersion { background-color: #00FF00; /* Green color code */ } /* Center-align the first row headers */ #scriptField th { text-align: center; } Key Status/Resolution FixVersion CSHARP-3224 Blocked JAVA-3864 Blocked

    Description

      Downstream Change Summary

      Specific downstream impact TBD.

      Description of Linked Ticket

      Epic Summary

      Summary

      Add an approximate count distinct accumulator.

      Motivation

      Exact count distinct (PM-1936) is an important analytical tool but it is computationally expensive (see Appendix in here). Therefore, users often prefer to use an approximate statistic that can be applied to large volumes of data. This effort will also pave the way to support approximate count distinct in on-demand materialized views, as the exact count distinct accumulator cannot easily be incremented.

      Cast of Characters

      • Product Owner: Katya Kameniava
      • Project Lead: Pawel Terlecki
      • Program Manager: Craig Homa
      • Drivers Contact:

      Documentation

      Scope Document
      Technical Design Document
      Product Description

      Attachments

        Activity

          People

            Unassigned Unassigned
            backlog-server-pm Backlog - Core Eng Program Management Team
            Votes:
            0 Vote for this issue
            Watchers:
            1 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved: