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  1. MariaDB ColumnStore
  2. MCOL-6238

Some of tcph selects fail with query accelerator enabled

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • None
    • None
    • None
    • None
    • 2025-11, 2026-1, 2026-2

    Description

      MariaDB Version 11.4.9-5
      Columnstore commit 1e0c713330fae47757de501db7b2291aa3b6ac58

      There is a test with selects from tcph: https://github.com/mariadb-corporation/mariadb-columnstore-engine/blob/stable-23.10/mysql-test/columnstore/future/query_accelerator.test

      Requests Q2, Q11, Q13, Q18 fail with errors

      Executing Q12, Q16 results in SIGSEGV

      outputs of test runs are attached

      core files from Q12, Q16:
      https://drive.google.com/file/d/1ck4Vm3HpAAaM-X32y67Jv12r7O6Leee-/view?usp=sharing
      https://drive.google.com/file/d/1UhFaUec6HKFbPuFjvu8x-S3hGlIWuIQW/view?usp=sharing

      If rbo and --columnstore_innodb_queries_use_mcs=on option are disabled before these problematic queries, they start to work

      abukhalovAfter this bug is fixed, all queries in query_accelerator.test should be enabled and should work without problems

      Attachments

        1. prepare.sh
          2 kB
          Aleksei Bukhalov
        2. Q11
          4 kB
          Aleksei Bukhalov
        3. Q12_crash
          5 kB
          Aleksei Bukhalov
        4. Q13
          4 kB
          Aleksei Bukhalov
        5. Q16_crash
          4 kB
          Aleksei Bukhalov
        6. Q18
          3 kB
          Aleksei Bukhalov
        7. Q2
          7 kB
          Aleksei Bukhalov
        8. query_02.sql
          12 kB
          Aleksei Bukhalov
        9. query_11.sql
          12 kB
          Aleksei Bukhalov
        10. query_13.sql
          12 kB
          Aleksei Bukhalov
        11. query_16.sql
          12 kB
          Aleksei Bukhalov
        12. query_18.sql
          12 kB
          Aleksei Bukhalov

        Issue Links

          causes

          Task - A task that needs to be done. MCOL-6290 Compare tpc-h performance of columnstore with and without Query Accelerator using go-tpc

          • Major - Major loss of function.
          • Open
          is blocked by

          Bug - A problem which impairs or prevents the functions of the product. MCOL-6251 Query Accelerator should support subqueries

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MCOL-6268 TPC-H queries with subslect with aggregate are not working (queries 2, 11 and 18)

          • Major - Major loss of function.
          • Closed
          is caused by

          Task - A task that needs to be done. MCOL-6152 Query Accelerator Testing

          • Major - Major loss of function.
          • Closed

          Activity

            People

              leonid.fedorov Leonid Fedorov
              abukhalov Aleksei Bukhalov
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              Dates

                Created:
                Updated:
                Resolved:

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