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dd710e7552
Relaxed assertion (in MySQL it was removed). For "LOCK TABLES t1 WRITE CONCURRENT, t1 READ" upgrade lock to weakest existing suitable lock, which is MDL_SHARED_NO_READ_WRITE.
20 lines
772 B
Plaintext
20 lines
772 B
Plaintext
--source include/have_metadata_lock_info.inc
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--source include/have_innodb.inc
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--echo #
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--echo # MDEV-12882 - Assertion `mdl_ticket->m_type == MDL_SHARED_UPGRADABLE ||
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--echo # mdl_ticket->m_type == MDL_SHARED_NO_WRITE ||
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--echo # mdl_ticket->m_type == MDL_SHARED_NO_READ_WRITE ||
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--echo # mdl_ticket->m_type == MDL_SHARED_READ'
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--echo # failed in MDL_context::upgrade_shared_lock
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--echo #
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CREATE TABLE t1(a INT) ENGINE=InnoDB;
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LOCK TABLES t1 WRITE CONCURRENT, t1 AS t2 READ;
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SELECT * FROM information_schema.metadata_lock_info;
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UNLOCK TABLES;
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LOCK TABLES t1 AS t2 READ, t1 WRITE CONCURRENT;
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SELECT * FROM information_schema.metadata_lock_info;
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UNLOCK TABLES;
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DROP TABLE t1;
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