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188 lines
4.4 KiB
Text
188 lines
4.4 KiB
Text
--source include/have_innodb.inc
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--echo #
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--echo # MDEV-26642 Weird SELECT view when a record is
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--echo # modified to the same value by two transactions
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--echo # MDEV-32898 Phantom rows caused by updates of PRIMARY KEY
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--echo #
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CREATE TABLE t(a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
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INSERT INTO t VALUES (1,1),(2,2);
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BEGIN; SELECT * FROM t LOCK IN SHARE MODE;
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--connect con_weird,localhost,root
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SET innodb_snapshot_isolation=OFF;
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BEGIN;
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SELECT * FROM t;
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--connect consistent,localhost,root
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SET innodb_snapshot_isolation=ON;
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BEGIN;
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SELECT * FROM t;
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--connection default
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UPDATE t SET a=3 WHERE b=2;
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COMMIT;
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--connection consistent
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--error ER_CHECKREAD
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UPDATE t SET b=3;
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SELECT * FROM t;
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COMMIT;
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--connection con_weird
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UPDATE t SET b=3;
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SELECT * FROM t;
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COMMIT;
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--connection default
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SELECT * FROM t;
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DROP TABLE t;
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--echo #
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--echo # MDEV-26643 Inconsistent behaviors of UPDATE under
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--echo # READ UNCOMMITTED and READ COMMITTED isolation level
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--echo #
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CREATE TABLE t(a INT, b INT) ENGINE=InnoDB;
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INSERT INTO t VALUES(NULL, 1), (2, 2);
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SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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BEGIN; UPDATE t SET a = 10;
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--connection consistent
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SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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--send UPDATE t SET b = 20 WHERE a
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--connection default
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = 'Updating'
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and info = 'UPDATE t SET b = 20 WHERE a';
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--source include/wait_condition.inc
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COMMIT;
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--connection consistent
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--reap
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SELECT * FROM t;
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--connection default
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TRUNCATE TABLE t;
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INSERT INTO t VALUES(NULL, 1), (2, 2);
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BEGIN; UPDATE t SET a = 10;
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--connection consistent
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SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
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--send UPDATE t SET b = 20 WHERE a
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--connection default
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where info = 'UPDATE t SET b = 20 WHERE a';
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--source include/wait_condition.inc
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COMMIT;
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--connection consistent
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--reap
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SELECT * FROM t;
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--connection default
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TRUNCATE TABLE t;
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INSERT INTO t VALUES(NULL, 1), (2, 2);
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BEGIN; UPDATE t SET a = 10;
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--connection con_weird
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SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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send UPDATE t SET b = 20 WHERE a;
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--connection default
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = 'Updating'
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and info = 'UPDATE t SET b = 20 WHERE a';
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--source include/wait_condition.inc
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SELECT * FROM t;
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COMMIT;
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--connection con_weird
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--reap
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COMMIT;
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--connection default
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SELECT * FROM t;
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TRUNCATE TABLE t;
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--echo #
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--echo # MDEV-34108 Inappropriate semi-consistent read in snapshot isolation
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--echo #
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INSERT INTO t VALUES(NULL, 1), (1, 1);
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BEGIN;
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UPDATE t SET b = 3;
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--connection consistent
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SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
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BEGIN;
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# As semi-consistent read is disabled for innodb_snapshot_isolation=ON, the
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# following UPDATE must be blocked on the first record.
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--send UPDATE t SET b = 2 WHERE a
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--connection default
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = 'Updating' and info = 'UPDATE t SET b = 2 WHERE a';
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--source include/wait_condition.inc
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UPDATE t SET a = 1;
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COMMIT;
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--connection consistent
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# If the bug wouldn't be fixed, the result would be (1,3),(1,2), because
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# "UPDATE t SET b = 2 WHERE a" would be blocked on the second (1,3) record,
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# as semi-consistent read would filter out the first (null,3) record without
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# blocking.
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--reap
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COMMIT;
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--connection default
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SELECT * FROM t;
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DROP TABLE t;
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--echo #
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--echo # MDEV-33802 Weird read view after ROLLBACK of other transactions
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--echo #
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CREATE TABLE t(a INT PRIMARY KEY, b INT UNIQUE) ENGINE=InnoDB;
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INSERT INTO t SET a=1;
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BEGIN; INSERT INTO t SET a=2;
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--connection consistent
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START TRANSACTION WITH CONSISTENT SNAPSHOT;
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SAVEPOINT sp1;
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--disable_ps2_protocol
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--error ER_CHECKREAD
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SELECT * FROM t FORCE INDEX (b) FOR UPDATE;
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--enable_ps2_protocol
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SAVEPOINT sp1;
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--connection con_weird
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START TRANSACTION WITH CONSISTENT SNAPSHOT;
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send
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SELECT * FROM t FORCE INDEX (b) FOR UPDATE;
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--connection default
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = 'Sending data'
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and info LIKE 'SELECT * FROM t %';
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--source include/wait_condition.inc
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ROLLBACK;
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--connection con_weird
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--reap
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SELECT * FROM t FORCE INDEX (b) FOR UPDATE;
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--disconnect con_weird
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--connection consistent
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SELECT * FROM t FORCE INDEX (b) FOR UPDATE;
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--disconnect consistent
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--connection default
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DROP TABLE t;
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--echo # End of 10.6 tests
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