Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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10.2.2, 10.3.0, 10.3.7, 10.4.0, 10.5.0, 10.4(EOL)
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None
Description
Compare the outputs of the following statements:
C:\Program Files\MariaDB 10.3\bin>mysql -uroot -proot -P3316 test
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Welcome to the MariaDB monitor. Commands end with ; or \g.
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Your MariaDB connection id is 10
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Server version: 10.3.7-MariaDB-log mariadb.org binary distribution
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Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
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Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
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MariaDB [test]> select * from information_schema.innodb_mutexes;
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+------+---------------------+-------------+----------+
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| NAME | CREATE_FILE | CREATE_LINE | OS_WAITS |
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+------+---------------------+-------------+----------+
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| | log0log.cc | 644 | 1 |
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| | combined buf0buf.cc | 1510 | 1 |
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+------+---------------------+-------------+----------+
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2 rows in set (0.005 sec)
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MariaDB [test]> show engine innodb mutex;
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+--------+-----------------------------+---------+
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| Type | Name | Status |
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+--------+-----------------------------+---------+
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| InnoDB | rwlock: log0log.cc:644 | waits=1 |
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| InnoDB | sum rwlock: buf0buf.cc:1510 | waits=1 |
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+--------+-----------------------------+---------+
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2 rows in set (0.005 sec)
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One would expect Name column in the output of the first one to contain a mutex name, as the second one demonstrates (or more specific one). It looks like the name is always missing.