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5f001bd7b8
The code was backported from 10.5 be8113861c
commit. See that commit message for details.
28 lines
924 B
Plaintext
28 lines
924 B
Plaintext
#
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# MDEV-27025 insert-intention lock conflicts with waiting ORDINARY lock
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#
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CREATE TABLE t (a INT PRIMARY KEY, b INT NOT NULL UNIQUE) ENGINE=InnoDB;
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connect prevent_purge,localhost,root,,;
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start transaction with consistent snapshot;
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connection default;
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INSERT INTO t VALUES (20,20);
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DELETE FROM t WHERE b = 20;
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connect con_ins,localhost,root,,;
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SET DEBUG_SYNC = 'row_ins_sec_index_entry_dup_locks_created SIGNAL ins_set_locks WAIT_FOR ins_cont';
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INSERT INTO t VALUES(10, 20);
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connect con_del,localhost,root,,;
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SET DEBUG_SYNC = 'now WAIT_FOR ins_set_locks';
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SET DEBUG_SYNC = 'lock_wait_suspend_thread_enter SIGNAL del_locked';
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DELETE FROM t WHERE b = 20;
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connection default;
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SET DEBUG_SYNC = 'now WAIT_FOR del_locked';
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SET DEBUG_SYNC = 'now SIGNAL ins_cont';
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connection con_ins;
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disconnect con_ins;
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connection con_del;
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disconnect con_del;
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disconnect prevent_purge;
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connection default;
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SET DEBUG_SYNC = 'RESET';
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DROP TABLE t;
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