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  1. MariaDB Server
  2. MDEV-8268

InnoDB: Assertion failure in file buf0buf.cc line 5842 failing assertion ut_a(free_slot != NULL);

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          Found using:

          • innodb_read_io_threads=24
          • innodb_write_io_threads=24
          • innodb_buffer_pool_instances=32
          • innodb_encrypt_tables=1

          Problem is that there can be more than pre-allocated number of used slots on encryption/compression because of open I/O requests.

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                jplindst Jan Lindström added a comment -

                commit 4a6a61cb8190ad5b8fc3993b15e0fa48bcb730a5
                Author: Jan Lindström <jan.lindstrom@mariadb.com>
                Date: Mon Jun 8 08:09:33 2015 +0300

                MDEV-8268: InnoDB: Assertion failure in file buf0buf.cc line 5842 failing assertion ut_a(free_slot != NULL);

                Analysis: Problem is that there is not enough temporary buffer slots
                for pending IO requests.

                Fixed by allocating same amount of temporary buffer slots as there
                are max pending IO requests.

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                jplindst Jan Lindström added a comment - commit 4a6a61cb8190ad5b8fc3993b15e0fa48bcb730a5 Author: Jan Lindström <jan.lindstrom@mariadb.com> Date: Mon Jun 8 08:09:33 2015 +0300 MDEV-8268 : InnoDB: Assertion failure in file buf0buf.cc line 5842 failing assertion ut_a(free_slot != NULL); Analysis: Problem is that there is not enough temporary buffer slots for pending IO requests. Fixed by allocating same amount of temporary buffer slots as there are max pending IO requests.

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                  • Assignee:
                    jplindst Jan Lindström
                    Reporter:
                    jplindst Jan Lindström
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                      Updated:
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