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  1. MariaDB Server
  2. MDEV-25020

SELECT if there is IN clause with binary UUID in binary form is extremely slow since MariaDB 10.5.9

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    Description

      table with primery key binary(16)

      `SELECT from table WHERE key IN (binary form ids, ....)` is extremly slow

      while

      `SELECT from table WHERE key IN ((0x11e6a2ad166fc342abde002590a2360a),
      (0x11e6a2ad16750370aeaf002590a2360a),
      (0x11e6a2ad167a186a9e19002590a2360a),....)`
      is perfectly fast.

      IDs in binary form I mean this: https://tinyurl.com/ycfyftby

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        1. screenshot-1.png
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        2. log_slow.log
          6 kB
        3. log_fast.log
          96 kB

        Issue Links

          causes

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29242 Assertion `computed_weight == weight' failed SEL_ARG::verify_weight

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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-9750 Quick memory exhaustion with 'extended_keys=on' on queries having multiple 'IN'/'NOT IN' using InnoDB

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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-27530 InnoDB - Performance issues after upgrade 10.4.22 to 10.5.13

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-28518 After update to 10.5 a lot of time is spent in "Sending data"

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

          Task - A task that needs to be done. MDEV-28638 ANALYZE FORMAT=JSON should print time spent in the optimizer

          • Major - Major loss of function.
          • Closed

          Activity

            People

              psergei Sergei Petrunia
              forgie Ján Forgáč
              Votes:
              2 Vote for this issue
              Watchers:
              9 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

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