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09c80e12c5
Major replication test framework cleanup. This does the following:
- Ensure that all tests clean up the replication state when they
finish, by making check-testcase check the output of SHOW SLAVE STATUS.
This implies:
- Slave must not be running after test finished. This is good
because it removes the risk for sporadic errors in subsequent
tests when a test forgets to sync correctly.
- Slave SQL and IO errors must be cleared when test ends. This is
good because we will notice if a test gets an unexpected error in
the slave threads near the end.
- We no longer have to clean up before a test starts.
- Ensure that all tests that wait for an error in one of the slave
threads waits for a specific error. It is no longer possible to
source wait_for_slave_[sql|io]_to_stop.inc when there is an error
in one of the slave threads. This is good because:
- If a test expects an error but there is a bug that causes
another error to happen, or if it stops the slave thread without
an error, then we will notice.
- When developing tests, wait_for_*_to_[start|stop].inc will fail
immediately if there is an error in the relevant slave thread.
Before this patch, we had to wait for the timeout.
- Remove duplicated and repeated code for setting up unusual replication
topologies. Now, there is a single file that is capable of setting
up arbitrary topologies (include/rpl_init.inc, but
include/master-slave.inc is still available for the most common
topology). Tests can now end with include/rpl_end.inc, which will clean
up correctly no matter what topology is used. The topology can be
changed with include/rpl_change_topology.inc.
- Improved debug information when tests fail. This includes:
- debug info is printed on all servers configured by include/rpl_init.inc
- User can set $rpl_debug=1, which makes auxiliary replication files
print relevant debug info.
- Improved documentation for all auxiliary replication files. Now they
describe purpose, usage, parameters, and side effects.
- Many small code cleanups:
- Made have_innodb.inc output a sensible error message.
- Moved contents of rpl000017-slave.sh into rpl000017.test
- Added mysqltest variables that expose the current state of
disable_warnings/enable_warnings and friends.
- Too many to list here: see per-file comments for details.
104 lines
4.5 KiB
Plaintext
104 lines
4.5 KiB
Plaintext
###############################################################################
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# #
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# Variable Name: init_slave #
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# Scope: GLOBAL #
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# Access Type: Dynamic #
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# Data Type: string #
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# Default Value: #
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# Range: #
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# #
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# #
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# Creation Date: 2008-03-08 #
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# Author: Rizwan #
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# Modified: HHunger 2008-09-29 Fixed the bug by inserting the usual wait and #
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# SQL-Satements to control master and slave, #
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# deleted the sleep and made improvements like: #
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# - Replaced the opt file by dynamic variables, #
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# - Made the tests independant of the initial #
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# values of the global variables, #
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# - Reduced the test to the needed test case to #
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# save run time, #
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# - Beautification. #
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# #
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# Description: Test Cases of Dynamic System Variable init_slave #
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# that checks the behavior of this variable #
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# #
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# Reference: #
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# http://dev.mysql.com/doc/refman/5.1/en/server-system-variables.html #
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# #
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###############################################################################
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source include/master-slave.inc;
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--echo connection slave
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connection slave;
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#
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# save the current values
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SET @start_max_connections= @@global.max_connections;
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SET @start_init_slave= @@global.init_slave;
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# setting of a global value with an effect on the next start of the slave server
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# check that @@global.init_slave could be set
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let $my_init_slave=
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'SET @@global.max_connections = @@global.max_connections + 1';
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eval SET @@global.init_slave = $my_init_slave;
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# show the data type of the variable
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--disable_warnings
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DROP TABLE IF EXISTS t1;
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CREATE TEMPORARY TABLE t1 AS SELECT @@global.init_slave AS my_column;
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--enable_warnings
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DESCRIBE t1;
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DROP TABLE t1;
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#
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# check that the new setting of @@global.init_slave becomes immediately visible
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eval SELECT @@global.init_slave = $my_init_slave;
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--echo Expect 1
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# wait for the slave threads have set the global variable.
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let $wait_timeout= 240;
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let $wait_condition= SELECT @@global.max_connections = @start_max_connections;
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--source include/wait_condition_sp.inc
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# check that the action in init_slave does not happen immediately
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SELECT @@global.max_connections= @start_max_connections;
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--echo Expect 1
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#
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# reset of the server
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STOP SLAVE;
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--wait_for_slave_to_stop
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RESET MASTER;
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RESET SLAVE;
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START SLAVE;
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source include/wait_for_slave_to_start.inc;
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#
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# wait for the slave threads have set the global variable.
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let $wait_timeout= 90;
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let $wait_condition= SELECT @@global.max_connections = @start_max_connections + 1;
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--source include/wait_condition_sp.inc
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# check that the action in init_slave was executed and had the intended effect
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SELECT @@global.max_connections = @start_max_connections + 1;
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--echo Expect 1
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#
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# Setting a variable(which is local to a session) and must not be visible
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SET @@global.init_slave = "SET @a=5";
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#
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STOP SLAVE;
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--wait_for_slave_to_stop
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RESET MASTER;
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RESET SLAVE;
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START SLAVE;
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source include/wait_for_slave_to_start.inc;
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#
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SHOW VARIABLES LIKE 'init_slave';
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# expect NULL
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SELECT @a;
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--echo Expect NULL
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#
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# Clean up
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SET @@global.max_connections= @start_max_connections;
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SET @@global.init_slave= @start_init_slave;
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##################################################
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# End of functionality Testing for init_slave #
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##################################################
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--source include/rpl_end.inc
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