SET @auto_commit= @@global.autocommit;
SET @@global.autocommit=0;
SET @transaction_isolation= @@global.transaction_isolation;
SET GLOBAL TRANSACTION ISOLATION LEVEL SERIALIZABLE;
SET @lock_wait=@@global.lock_wait_timeout;
SET @@global.lock_wait_timeout=1;
SET @innodb_lock_wait=@@global.innodb_lock_wait_timeout;
SET @@global.innodb_lock_wait_timeout=1;
INSERT INTO cache_policies VALUES("cache_policy", "innodb_only",
"innodb_only", "innodb_only", "innodb_only");
INSERT INTO config_options VALUES("separator", "|");
INSERT INTO containers VALUES ("desc_t1", "test", "t1",
"c1", "c2,c21", "c3", "c4", "c5", "PRIMARY");
CREATE USER mysqltest1@localhost;
COMMIT;
connect  mysqltest1,localhost,mysqltest1,,;
connection mysqltest1;
USE test;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1        (c1 VARCHAR(32),
c2 VARCHAR(1024),
c21 VARCHAR(1024),
c3 INT, c4 BIGINT UNSIGNED, c5 INT, primary key(c1))
ENGINE = INNODB;
COMMIT;
connection default;
INSTALL PLUGIN daemon_memcached SONAME 'libmemcached.so';
SELECT @@global.daemon_memcached_w_batch_size;
@@global.daemon_memcached_w_batch_size
4
SET @@global.daemon_memcached_w_batch_size=100;
ERROR HY000: Variable 'daemon_memcached_w_batch_size' is a read only variable
connection mysqltest1;
SELECT c1,c2,c21 FROM t1;
c1	c2	c21
COMMIT;
connection default;
Berlin|Mitte
Darmstadt|City
SELECT c1,c2,c21 FROM test.t1;
c1	c2	c21
B	Berlin	Mitte
D	Darmstadt	City
connection mysqltest1;
SELECT SLEEP(1);
SLEEP(1)
0
SELECT c1,c2,c21 FROM t1 FOR UPDATE;
c1	c2	c21
B	Berlin	Mitte
D	Darmstadt	City
ROLLBACK;
connection default;
Here are the memcached results:
München|Perlach
Nürnberg|Nord
Oldenburg|Friesland
SELECT c1,c2,c21 FROM test.t1;
c1	c2	c21
B	Berlin	Mitte
D	Darmstadt	City
M	München	Perlach
N	Nürnberg	Nord
O	Oldenburg	Friesland
connection mysqltest1;
SELECT SLEEP(1);
SLEEP(1)
0
SELECT c1,c2,c21 FROM test.t1 FOR UPDATE;
c1	c2	c21
B	Berlin	Mitte
D	Darmstadt	City
M	München	Perlach
N	Nürnberg	Nord
O	Oldenburg	Friesland
COMMIT;
connection default;
Here are the memcached results:
SELECT c1,c2,c21 FROM test.t1;
c1	c2	c21
B	Berlin	Mitte
D	Darmstadt	City
M	München	Perlach
N	Nürnberg	Nord
O	Oldenburg	Friesland
connection mysqltest1;
SELECT SLEEP(1);
SLEEP(1)
0
SELECT c1,c2,c21 FROM test.t1 FOR UPDATE;
c1	c2	c21
B	Berlin	Mitte
D	Darmstadt	City
M	München	Perlach
N	Nürnberg	Nord
O	Oldenburg	Friesland
DROP TABLE test.t1;
COMMIT;
connection default;
disconnect mysqltest1;
UNINSTALL PLUGIN daemon_memcached;
DROP DATABASE innodb_memcache;
DROP USER mysqltest1@localhost;
SET @@global.transaction_isolation= @transaction_isolation;
SET  @@global.autocommit=@auto_commit;
SET @@global.lock_wait_timeout=@lock_wait;
SET @@global.innodb_lock_wait_timeout=@innodb_lock_wait;