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  1. MariaDB Server
  2. MDEV-33120

System log table names are case insensitive with lower-cast-table-names=0

Details

    Description

      I run this MTR test on Linux:

      --source include/have_lowercase0.inc
      		 
      --source include/have_case_sensitive_file_system.inc
      		 
       
      		 
      CREATE TABLE mysql.GENERAL_log (a INT);
      		 
      INSERT INTO mysql.GENERAL_log VALUES (1),(2);
      		 
      DROP TABLE mysql.GENERAL_log;

      It fails on the INSERT statement with the following error:

      mysqltest: At line 13: query 'INSERT INTO mysql.GENERAL_log VALUES (1),(2)' failed: ER_CANT_LOCK_LOG_TABLE (1556): You can't use locks with log tables

      This is wrong. GENERAL_log is not a log table.

      The problem resides in the function get_table_category(), in these line:

          if (lex_string_eq(&GENERAL_LOG_NAME, name))
      		 
            return TABLE_CATEGORY_LOG;

      This is wrong to compare table names case insensitively in Linux.
      Table names should be compared according to --lower-case-table-names.

      The same problem is repeatable for "slow_log" and "transaction_registry".

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          relates to

          Task - A task that needs to be done. MDEV-31340 Remove MY_COLLATION_HANDLER::strcasecmp()

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

          Activity

            Transition Time In Source Status Execution Times
            Alexander Barkov made transition -
            Open Closed
            		147d 8h 17m 1

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              bar Alexander Barkov
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                Updated:
                Resolved:

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