mariadb/mysql-test/suite/rpl/t/rpl_flushlog_loop.test

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# Testing if "flush logs" command bouncing resulting in logs created in a loop
# in case of bi-directional replication
-- source include/master-slave.inc
let $MYSQLD_DATADIR= `select @@datadir`;
--replace_result $MYSQLD_DATADIR MYSQLD_DATADIR/
show variables like 'relay_log%';
connection slave;
--disable_warnings
stop slave;
--enable_warnings
--replace_result $MASTER_MYPORT MASTER_PORT
eval change master to master_host='127.0.0.1',master_user='root',
master_password='',master_port=$MASTER_MYPORT;
start slave;
#
# Start replication slave -> master
#
connection master;
--disable_warnings
stop slave;
--enable_warnings
--replace_result $SLAVE_MYPORT SLAVE_PORT
eval change master to master_host='127.0.0.1',master_user='root',
master_password='',master_port=$SLAVE_MYPORT;
BUG#37975: wait_for_slave_* should increase the timeout Problem 1: tests often fail in pushbuild with a timeout when waiting for the slave to start/stop/receive error. Fix 1: Updated the wait_for_slave_* macros in the following way: - The timeout is increased by a factor ten - Refactored the macros so that wait_for_slave_param does the work for the other macros. Problem 2: Tests are often incorrectly written, lacking a source include/wait_for_slave_to_[start|stop].inc. Fix 2: Improved the chance to get it right by adding include/start_slave.inc and include/stop_slave.inc, and updated tests to use these. Problem 3: The the built-in test language command wait_for_slave_to_stop is a misnomer (does not wait for the slave io thread) and does not give as much debug info in case of failure as the otherwise equivalent macro source include/wait_for_slave_sql_to_stop.inc Fix 3: Replaced all calls to the built-in command by a call to the macro. Problem 4: Some, but not all, of the wait_for_slave_* macros had an implicit connection slave. This made some tests confusing to read, and made it more difficult to use the macro in circular replication scenarios, where the connection named master needs to wait. Fix 4: Removed the implicit connection slave from all wait_for_slave_* macros, and updated tests to use an explicit connection slave where necessary. Problem 5: The macros wait_slave_status.inc and wait_show_pattern.inc were unused. Moreover, using them is difficult and error-prone. Fix 5: remove these macros. Problem 6: log_bin_trust_function_creators_basic failed when running tests because it assumed @@global.log_bin_trust_function_creators=1, and some tests modified this variable without resetting it to its original value. Fix 6: All tests that use this variable have been updated so that they reset the value at end of test.
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source include/start_slave.inc;
#
# Flush logs of slave
#
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# Create full loop by following way:
# 1. Insert into t1 on master (1st).
# 2. Insert into t1 on slave (2nd) when the event (1st) for t1 replicated.
# 3. Master waits until the event (2nd) for t1 will be replicated.
--disable_query_log
CREATE TABLE t1 (a INT KEY) ENGINE= MyISAM;
let $wait_binlog_event= CREATE TABLE t1;
--source include/wait_for_binlog_event.inc
sync_slave_with_master;
connection master;
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INSERT INTO t1 VALUE(1);
--enable_query_log
FLUSH LOGS;
let $slave_param_value= query_get_value(SHOW MASTER STATUS, Position, 1);
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connection slave;
let $slave_param= Exec_Master_Log_Pos;
source include/wait_for_slave_param.inc;
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--disable_query_log
INSERT INTO t1 VALUE(2);
let $slave_param_value= query_get_value(SHOW MASTER STATUS, Position, 1);
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--enable_query_log
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connection master;
let $slave_param= Exec_Master_Log_Pos;
source include/wait_for_slave_param.inc;
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--enable_query_log
#
# Show status of slave
#
--replace_result $SLAVE_MYPORT SLAVE_PORT $slave_param_value POSITION
--replace_column 1 # 8 # 9 # 16 # 23 # 33 # 34 # 35 #
--query_vertical SHOW SLAVE STATUS
--disable_query_log
connection master;
DROP TABLE t1;
sync_slave_with_master;
--enable_query_log