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1efdd5a572
(and to follow the naming conventons). keep old debug variable, but mark it as deprecated.
57 lines
1.3 KiB
Text
57 lines
1.3 KiB
Text
#
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# Bug #43867 ALTER TABLE on a partitioned table
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# causes unnecessary deadlocks
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#
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CREATE TABLE t1 (a int) PARTITION BY RANGE (a)
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(PARTITION p0 VALUES LESS THAN (1),
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PARTITION p1 VALUES LESS THAN (2));
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INSERT INTO t1 VALUES (0),(1);
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# Connection 2
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BEGIN;
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SELECT * FROM t1;
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a
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0
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1
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# Connection 1
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ALTER TABLE t1 DROP PARTITION p3;
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ERROR HY000: Error in list of partitions to DROP
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# Connection 2
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# This failed with deadlock and should not do so.
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SELECT * FROM t1;
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a
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0
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1
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# Connection 1
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DROP TABLE t1;
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#
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# Bug #46654 False deadlock on concurrent DML/DDL
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# with partitions, inconsistent behavior
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#
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DROP TABLE IF EXISTS tbl_with_partitions;
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CREATE TABLE tbl_with_partitions ( i INT )
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PARTITION BY HASH(i);
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INSERT INTO tbl_with_partitions VALUES (1);
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# Connection 3
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LOCK TABLE tbl_with_partitions READ;
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# Connection 1
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# Access table with disabled autocommit
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SET AUTOCOMMIT = 0;
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SELECT * FROM tbl_with_partitions;
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i
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1
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# Connection 2
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# Alter table, abort after prepare
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set session debug_dbug="+d,abort_copy_table";
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ALTER TABLE tbl_with_partitions ADD COLUMN f INT;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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# Connection 1
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# Try accessing the table after Alter aborted.
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# This used to give ER_LOCK_DEADLOCK.
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SELECT * FROM tbl_with_partitions;
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i
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1
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# Connection 3
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UNLOCK TABLES;
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# Connection 1
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# Cleanup
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DROP TABLE tbl_with_partitions;
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