137 lines
2.9 KiB
PHP
137 lines
2.9 KiB
PHP
#
|
|
# TRANSACTION WITH CONSISTENT SNAPSHOT
|
|
#
|
|
|
|
--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,,);
|
|
connect (con2,localhost,root,,);
|
|
|
|
connection con1;
|
|
|
|
CREATE TABLE t1 (a INT, pk INT AUTO_INCREMENT PRIMARY KEY) ENGINE=XENGINE;
|
|
eval SET SESSION TRANSACTION ISOLATION LEVEL $trx_isolation;
|
|
|
|
# While a consistent snapshot transaction is executed,
|
|
# no external inserts should be visible to the transaction.
|
|
# But it should only work this way for REPEATABLE-READ and SERIALIZABLE
|
|
|
|
--error 0,ER_UNKNOWN_ERROR
|
|
START TRANSACTION WITH CONSISTENT SNAPSHOT;
|
|
--echo ERROR: $mysql_errno
|
|
|
|
connection con2;
|
|
select * from information_schema.xengine_dbstats where stat_type='DB_NUM_SNAPSHOTS';
|
|
|
|
connection con1;
|
|
COMMIT;
|
|
|
|
# verifying snapshot is released after finishing transaction
|
|
connection con2;
|
|
select * from information_schema.xengine_dbstats where stat_type='DB_NUM_SNAPSHOTS';
|
|
|
|
connection con1;
|
|
--error 0,ER_UNKNOWN_ERROR
|
|
START TRANSACTION WITH CONSISTENT SNAPSHOT;
|
|
--echo ERROR: $mysql_errno
|
|
|
|
connection con2;
|
|
INSERT INTO t1 (a) VALUES (1);
|
|
|
|
connection con1;
|
|
--echo # If consistent read works on this isolation level ($trx_isolation), the following SELECT should not return the value we inserted (1)
|
|
SELECT a FROM t1;
|
|
COMMIT;
|
|
|
|
connection default;
|
|
disconnect con1;
|
|
disconnect con2;
|
|
DROP TABLE t1;
|
|
|
|
connect (con1,localhost,root,,);
|
|
connect (con2,localhost,root,,);
|
|
|
|
connection con1;
|
|
CREATE TABLE r1 (id int primary key, value int, value2 int) engine=XENGINE;
|
|
eval SET SESSION TRANSACTION ISOLATION LEVEL $trx_isolation;
|
|
insert into r1 values (1,1,1),(2,2,2),(3,3,3),(4,4,4);
|
|
|
|
BEGIN;
|
|
|
|
connection con2;
|
|
INSERT INTO r1 values (5,5,5);
|
|
|
|
connection con1;
|
|
SELECT * FROM r1; # 5
|
|
|
|
connection con2;
|
|
INSERT INTO r1 values (6,6,6);
|
|
|
|
connection con1;
|
|
SELECT * FROM r1; # 5
|
|
COMMIT;
|
|
SELECT * FROM r1; # 6
|
|
|
|
--error 0,ER_UNKNOWN_ERROR
|
|
START TRANSACTION WITH CONSISTENT SNAPSHOT;
|
|
--echo ERROR: $mysql_errno
|
|
|
|
connection con2;
|
|
INSERT INTO r1 values (7,7,7);
|
|
|
|
connection con1;
|
|
SELECT * FROM r1; # 6
|
|
|
|
connection con2;
|
|
INSERT INTO r1 values (8,8,8);
|
|
|
|
connection con1;
|
|
SELECT * FROM r1; # 6
|
|
COMMIT;
|
|
SELECT * FROM r1; # 8
|
|
|
|
--error 0,ER_UNKNOWN_ERROR
|
|
START TRANSACTION WITH CONSISTENT SNAPSHOT;
|
|
--echo ERROR: $mysql_errno
|
|
|
|
connection con2;
|
|
INSERT INTO r1 values (9,9,9);
|
|
|
|
connection con1;
|
|
--error 0,ER_UNKNOWN_ERROR
|
|
START TRANSACTION WITH CONSISTENT SNAPSHOT;
|
|
--echo ERROR: $mysql_errno
|
|
|
|
connection con2;
|
|
INSERT INTO r1 values (10,10,10);
|
|
|
|
connection con1;
|
|
SELECT * FROM r1; # 9
|
|
|
|
--error 0,ER_UNKNOWN_ERROR
|
|
START TRANSACTION WITH CONSISTENT SNAPSHOT;
|
|
--echo ERROR: $mysql_errno
|
|
# Succeeds with Read Committed, Fails with Repeatable Read
|
|
--error 0,ER_UNKNOWN_ERROR
|
|
INSERT INTO r1 values (11,11,11);
|
|
--echo ERROR: $mysql_errno
|
|
SELECT * FROM r1; # self changes should be visible
|
|
|
|
|
|
drop table r1;
|
|
|
|
connection default;
|
|
disconnect con1;
|
|
disconnect con2;
|
|
|
|
|
|
--source include/wait_until_count_sessions.inc
|
|
|