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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.
50 lines
1.5 KiB
PHP
50 lines
1.5 KiB
PHP
# ==== Purpose ====
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#
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# Sync the slave SQL thread with the IO thread.
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#
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# ==== Usage ====
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#
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# [--let $slave_timeout= NUMBER]
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# [--let $rpl_debug= 1]
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# --source include/sync_slave_sql_with_io.inc
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#
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# Parameters:
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# $slave_timeout
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# By default, the synchronization timeouts after 300 seconds. If
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# $slave_timeout is set, the synchronization timeouts after
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# $slave_timeout seconds.
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#
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# $rpl_debug
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# See include/rpl_init.inc
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--let $include_filename= sync_slave_sql_with_io.inc
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--source include/begin_include_file.inc
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let $_slave_timeout= $slave_timeout;
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if (!$_slave_timeout)
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{
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let $_slave_timeout= 300;
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}
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--let $_master_log_file= query_get_value(SHOW SLAVE STATUS, Master_Log_File, 1)
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--let $_master_log_pos= query_get_value(SHOW SLAVE STATUS, Read_Master_Log_Pos, 1)
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if ($rpl_debug)
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{
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--echo Master_Log_File='$_master_log_file' Read_Master_Log_Pos='$_master_log_pos' \$slave_timeout='$_slave_timeout'
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}
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--let $_sync_slave_sql_with_io_errno= `SELECT MASTER_POS_WAIT('$_master_log_file', $_master_log_pos, $_slave_timeout)`
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if (`SELECT IFNULL($_sync_slave_sql_with_io_errno, -1) < 0`)
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{
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--echo #### Failed to sync slave SQL thread with slave IO thread. ####
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--echo MASTER_POS_WAIT('$_master_log_file', $_master_log_pos, $_slave_timeout) returned $_sync_slave_sql_with_io_errno
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--source include/show_rpl_debug_info.inc
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--die Failed to sync slave SQL thread with slave IO thread.
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}
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--let $include_filename= sync_slave_sql_with_io.inc
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--source include/end_include_file.inc
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