151 lines
3.4 KiB
SQL
151 lines
3.4 KiB
SQL
#
|
|
# Basic check for transaction isolation.
|
|
# The results should be different depending on the isolation level.
|
|
# For some isolation levels, some statements will end with a timeout.
|
|
# If the engine has its own timeout parameters, reduce them to minimum,
|
|
# otherwise the test will take very long.
|
|
# If the timeout value is greater than the testcase-timeout the test is run with,
|
|
# it might fail due to the testcase timeout.
|
|
#
|
|
|
|
--enable_connect_log
|
|
|
|
# Save the initial number of concurrent sessions
|
|
--source include/count_sessions.inc
|
|
|
|
--disable_warnings
|
|
DROP TABLE IF EXISTS t1;
|
|
--enable_warnings
|
|
|
|
connect (con1,localhost,root,,);
|
|
eval SET SESSION TRANSACTION ISOLATION LEVEL $trx_isolation;
|
|
connect (con2,localhost,root,,);
|
|
eval SET SESSION TRANSACTION ISOLATION LEVEL $trx_isolation;
|
|
|
|
connection con1;
|
|
|
|
CREATE TABLE t1 (a INT, pk INT AUTO_INCREMENT PRIMARY KEY) ENGINE=xengine;
|
|
|
|
START TRANSACTION;
|
|
--sorted_result
|
|
SELECT a FROM t1; # First snapshot
|
|
|
|
connection con2;
|
|
|
|
BEGIN;
|
|
--error 0,ER_LOCK_WAIT_TIMEOUT
|
|
INSERT INTO t1 (a) VALUES(1);
|
|
|
|
connection con1;
|
|
--sorted_result
|
|
SELECT a FROM t1; # Second snapshot
|
|
|
|
connection con2;
|
|
--error 0,ER_LOCK_WAIT_TIMEOUT
|
|
INSERT INTO t1 (a) VALUES (2);
|
|
|
|
connection con1;
|
|
--sorted_result
|
|
SELECT a FROM t1; # Third snapshot
|
|
|
|
--error 0,ER_LOCK_WAIT_TIMEOUT
|
|
INSERT INTO t1 (a) SELECT a+100 FROM t1;
|
|
|
|
--sorted_result
|
|
SELECT a FROM t1;
|
|
|
|
connection con2;
|
|
--sorted_result
|
|
SELECT a FROM t1; # Inside the transaction
|
|
COMMIT;
|
|
--sorted_result
|
|
SELECT a FROM t1; # Outside the transaction
|
|
|
|
connection con1;
|
|
--sorted_result
|
|
SELECT a FROM t1; # Inside the transaction
|
|
|
|
# Note: INSERT .. SELECT might be tricky, for example for InnoDB
|
|
# even with REPEATABLE-READ it works as if it is executed with READ COMMITTED.
|
|
# The test will have a 'logical' result for repeatable read, even although
|
|
# we currently don't have an engine which works this way.
|
|
|
|
--error 0,ER_LOCK_WAIT_TIMEOUT
|
|
INSERT INTO t1 (a) SELECT a+200 FROM t1;
|
|
|
|
--sorted_result
|
|
SELECT a FROM t1;
|
|
COMMIT;
|
|
--sorted_result
|
|
SELECT a FROM t1; # Outside the transaction
|
|
|
|
connection con2;
|
|
--sorted_result
|
|
SELECT a FROM t1; # After both transactions have committed
|
|
|
|
# Now test with an error in one statement to make sure the snapshots are
|
|
# Held/released when expected
|
|
connection default;
|
|
CREATE TABLE t2 (a INT PRIMARY KEY) ENGINE=xengine;
|
|
INSERT INTO t2 (a) VALUES (1);
|
|
COMMIT;
|
|
|
|
connection con1;
|
|
BEGIN;
|
|
--sorted_result
|
|
SELECT a from t2;
|
|
--error ER_DUP_ENTRY
|
|
INSERT INTO t2 (a) VALUES (1), (3); # failure
|
|
|
|
connection con2;
|
|
--error 0,ER_LOCK_WAIT_TIMEOUT
|
|
INSERT INTO t2 (a) VALUES (2);
|
|
COMMIT;
|
|
|
|
connection con1;
|
|
--sorted_result
|
|
SELECT a from t2;
|
|
COMMIT;
|
|
|
|
connection default;
|
|
disconnect con1;
|
|
disconnect con2;
|
|
DROP TABLE t1;
|
|
DROP TABLE t2;
|
|
|
|
CREATE TABLE t3 (
|
|
pk int unsigned PRIMARY KEY,
|
|
count int unsigned DEFAULT '0'
|
|
) ENGINE=XENGINE;
|
|
|
|
connect (con1,localhost,root,,);
|
|
eval SET SESSION TRANSACTION ISOLATION LEVEL $trx_isolation;
|
|
connect (con2,localhost,root,,);
|
|
eval SET SESSION TRANSACTION ISOLATION LEVEL $trx_isolation;
|
|
|
|
connection con1;
|
|
BEGIN;
|
|
SELECT * FROM t3;
|
|
|
|
connection con2;
|
|
BEGIN;
|
|
INSERT INTO t3 (pk) VALUES(1) ON DUPLICATE KEY UPDATE count=count+1;
|
|
COMMIT;
|
|
|
|
connection con1;
|
|
--error 0,ER_LOCK_DEADLOCK
|
|
INSERT INTO t3 (pk) VALUES(1) ON DUPLICATE KEY UPDATE count=count+1;
|
|
COMMIT;
|
|
|
|
# count will be 0 for repeatable read (because the last insert failed)
|
|
# and 1 for read committed
|
|
SELECT count FROM t3;
|
|
|
|
connection default;
|
|
disconnect con1;
|
|
disconnect con2;
|
|
DROP TABLE t3;
|
|
|
|
--source include/wait_until_count_sessions.inc
|
|
|