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  1. MariaDB Server
  2. MDEV-34447

Memory leakage is detected on running the test main.ps against the server 11.1

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      CREATE TABLE t1 (id INT, value INT);
      		 
      CREATE TABLE t2 (id INT);
      		 
       
      		 
      PREPARE stmt FROM 'UPDATE t1 t1 SET value = (SELECT 1 FROM t2 WHERE id = t1.id)';
      		 
      execute stmt;
      		 
      insert into t1 values (1,10),(2,10),(3,10);
      		 
      insert into t2 values (1),(2);
      		 
      execute stmt;  # <<=== Memory leak happens on running this statement
      		 
      select * from t1;
      		 
      deallocate prepare stmt;
      		 
      DROP TABLE t1,t2;

      The above use case doesn't show memory leaking on 10.11.

      The similar issue could take place on running the DELETE statement with the LIMIT clause in PS/SP mode. So, this task also about fixing a memory leak in the code that processes the DELETE statement.

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          causes

          Bug - A problem which impairs or prevents the functions of the product. MDEV-35249 Assertion `(mem_root->flags & 4) == 0' failed in convert_subq_to_jtbm

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

          Task - A task that needs to be done. MDEV-14959 Control over memory allocated for SP/PS

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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-33858 Assertion `(mem_root->flags & 4) == 0' fails on 2nd execution of PS with -DWITH_PROTECT_STATEMENT_MEMROOT=ON

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-34757 assertion of (mem_root->flags & 4) == 0 fails in 2nd ps execution with partition pruning

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

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              shulga Dmitry Shulga
              shulga Dmitry Shulga
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                Created:
                Updated:
                Resolved:

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