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  1. MariaDB Server
  2. MDEV-28192

ERROR 1901 During ALTER Leading to frm table corruption

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    Description

      CREATE TABLE t (a INT AUTO_INCREMENT KEY) ENGINE=InnoDB;
      		 
      ALTER TABLE t ADD UNIQUE u USING HASH (a);

      Leads to:

      10.9.0 5be92887c2caacb45af87b1131db952ce627e83a (Optimized and Debug)

      		 
      10.9.0-opt>ALTER TABLE t ADD UNIQUE u USING HASH (a);
      		 
      ERROR 1901 (HY000): Function or expression 'AUTO_INCREMENT' cannot be used in the USING HASH clause of `a`

      10.9.0 5be92887c2caacb45af87b1131db952ce627e83a (Debug)

      		 
      2022-03-29 18:00:32 4 [ERROR] mysqld: Incorrect information in file: './test/#sql-alter-870e-4.frm'

      10.9.0 5be92887c2caacb45af87b1131db952ce627e83a (Optimized)

      		 
      2022-03-29 18:14:23 4 [ERROR] mysqld: Incorrect information in file: './test/#sql-alter-140c3c-4.frm'

      Bug confirmed present in:
      MariaDB: 10.4.25 (dbg), 10.4.25 (opt), 10.5.16 (dbg), 10.5.16 (opt), 10.6.8 (dbg), 10.6.8 (opt), 10.7.4 (dbg), 10.7.4 (opt), 10.8.3 (dbg), 10.8.3 (opt), 10.9.0 (dbg), 10.9.0 (opt)

      Bug (or feature/syntax) confirmed not present in:
      MariaDB: 10.2.44 (dbg), 10.2.44 (opt), 10.3.35 (dbg), 10.3.35 (opt)
      MySQL: 5.5.62 (dbg), 5.5.62 (opt), 5.6.51 (dbg), 5.6.51 (opt), 5.7.37 (dbg), 5.7.37 (opt), 8.0.28 (dbg), 8.0.28 (opt)

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29203 Incorrect information in file: ... #sql-alter ... .frm on ALTER when adding unique hash index, ERROR 1901

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

          Task - A task that needs to be done. MDEV-371 Unique indexes for blobs

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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-22759 Failing assertion: !cursor->index->is_committed() upon update on table with HASH index

          • Major - Major loss of function.
          • Confirmed

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              sanja Oleksandr Byelkin
              Roel Roel Van de Paar
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              Dates

                Created:
                Updated:
                Resolved:

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