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  1. MariaDB ColumnStore
  2. MCOL-4575

Hash table performance for collation aware DISTINCT

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Details

    • Bug
    • Status: Open (View Workflow)
    • Major
    • Resolution: Unresolved
    • 6.1.1
    • 23.10
    • ExeMgr, PrimProc
    • None

    Description

      When we fixed MCOL-4065 DISTINCT is case sensitive, we introduced a perfermance degredation. This has been patched for 5.5.2, but a more correct and faster algorithm has been proposed. This Jira is to track work on that proposal.

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. MCOL-4065 DISTINCT is case sensitive

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MCOL-4564 Performance issues for DBT3 queries #17, #18

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed

          Activity

            People

              drrtuy Roman
              David.Hall David Hall (Inactive)
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              Dates

                Created:
                Updated:

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