81 lines
2.0 KiB
Plaintext
81 lines
2.0 KiB
Plaintext
# Scenario: Test deadlock with high priority transactions
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# T1= ({R(A), W(A)}, HIGH_PRIORITY)
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# T2= ({R(B), W(B)}, HIGH_PRIORITY)
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# T1= ({R(B), W(B)}, HIGH_PRIORITY) --> T1 Wait
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# T2= ({R(A), W(A)}, HIGH_PRIORITY) --> T2 Dead Lock
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#
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# Outcome: T2 should error.
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--source include/count_sessions.inc
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CREATE TABLE t1 (c1 INT NOT NULL PRIMARY KEY) ENGINE=InnoDB;
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INSERT INTO t1 VALUES (0);
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INSERT INTO t1 VALUES (10);
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--connect(con1,localhost,root,,test)
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--connect(con2,localhost,root,,test)
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--echo
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--echo # On connection 1
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--connection con1
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--source include/start_transaction_high_prio.inc
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UPDATE t1 SET c1=1 WHERE c1=0;
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--echo
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--echo # On connection 2
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--connection con2
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--source include/start_transaction_high_prio.inc
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UPDATE t1 SET c1=12 WHERE c1=10;
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--echo
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--echo # On connection 1
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--connection con1
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let $con1_id=`SELECT CONNECTION_ID()`;
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--echo # Send
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--send UPDATE t1 SET c1=11 WHERE c1=10;
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--echo
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--echo # On connection 2
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--connection con2
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--disable_query_log
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eval SET @con1_id = $con1_id;
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--enable_query_log
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let $wait_timeout = 10;
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let $wait_condition= SELECT COUNT(*) = 1 FROM information_schema.processlist
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WHERE id = @con1_id AND INFO = 'UPDATE t1 SET c1=11 WHERE c1=10'
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AND STATE = 'updating';
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--source include/wait_condition.inc
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--sleep 1
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--error ER_LOCK_DEADLOCK
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UPDATE t1 SET c1=2 WHERE c1=0;
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--disconnect con2
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--echo
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--echo # On connection 1
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--connection con1
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--echo # Reap UPDATE t1 SET c1=11 WHERE c1=10
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--reap
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COMMIT;
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--disconnect con1
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--connection default
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--let $assert_text= 'There is a 1 in t1'
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--let $assert_cond= [SELECT COUNT(*) AS count FROM t1 WHERE t1.c1 = 1, count, 1] = 1
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--source include/assert.inc
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--let $assert_text= 'There is no 2 in t1'
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--let $assert_cond= [SELECT COUNT(*) AS count FROM t1 WHERE t1.c1 = 2, count, 1] = 0
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--source include/assert.inc
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--let $assert_text= 'There is no 0 in t1'
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--let $assert_cond= [SELECT COUNT(*) AS count FROM t1 WHERE t1.c1 = 0, count, 1] = 0
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--source include/assert.inc
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DROP TABLE t1;
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--source include/wait_until_count_sessions.inc
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