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78 lines
2 KiB
Text
78 lines
2 KiB
Text
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drop table if exists t1,t2,t3,t4,t5,t6;
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#
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# Bug#26379 - Combination of FLUSH TABLE and REPAIR TABLE
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# corrupts a MERGE table
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# Problem #3
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#
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CREATE TABLE t1 (c1 INT) ENGINE= MyISAM;
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LOCK TABLE t1 WRITE;
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# connection con1
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SET SESSION debug="+d,sleep_open_and_lock_after_open";
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INSERT INTO t1 VALUES (1);
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# connection default
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# Let INSERT go into thr_multi_lock().
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# Kick INSERT out of thr_multi_lock().
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FLUSH TABLES;
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# Let INSERT go through open_tables() where it sleeps.
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# Unlock and close table and wait for con1 to close too.
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FLUSH TABLES;
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# This should give no result.
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SELECT * FROM t1;
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c1
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UNLOCK TABLES;
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# connection con1
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SET SESSION debug="-d,sleep_open_and_lock_after_open";
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# connection default
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DROP TABLE t1;
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#
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# Extra tests for Bug#26379 - Combination of FLUSH TABLE and
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# REPAIR TABLE corrupts a MERGE table
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#
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CREATE TABLE t1 (c1 INT);
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CREATE TABLE t2 (c1 INT);
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CREATE TABLE t3 (c1 INT);
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INSERT INTO t1 VALUES (1);
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INSERT INTO t2 VALUES (2);
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INSERT INTO t3 VALUES (3);
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#
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# CREATE ... SELECT
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# try to access parent from another thread.
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#
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# connection con1
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SET SESSION debug="+d,sleep_create_select_before_lock";
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CREATE TABLE t4 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,t2)
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INSERT_METHOD=FIRST SELECT * FROM t3;
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# connection default
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# Now try to access the parent.
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# If 3 is in table, SELECT had to wait.
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SELECT * FROM t4 ORDER BY c1;
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c1
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1
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2
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3
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# connection con1
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SET SESSION debug="-d,sleep_create_select_before_lock";
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# connection default
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# Cleanup for next test.
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DROP TABLE t4;
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DELETE FROM t1 WHERE c1 != 1;
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#
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# CREATE ... SELECT
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# try to access child from another thread.
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#
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# connection con1
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SET SESSION debug="+d,sleep_create_select_before_lock";
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CREATE TABLE t4 (c1 INT) ENGINE=MRG_MYISAM UNION=(t1,t2)
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INSERT_METHOD=FIRST SELECT * FROM t3;
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# connection default
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# Now try to access a child.
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# If 3 is in table, SELECT had to wait.
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SELECT * FROM t1 ORDER BY c1;
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c1
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1
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3
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# connection con1
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SET SESSION debug="-d,sleep_create_select_before_lock";
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# connection default
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DROP TABLE t1, t2, t3, t4;
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