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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.
90 lines
3.0 KiB
Plaintext
90 lines
3.0 KiB
Plaintext
######################################################################
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# Some errors that cause the slave SQL thread to stop are not shown in
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# the Slave_SQL_Error column of "SHOW SLAVE STATUS". Instead, the error
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# is only in the server's error log.
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#
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# Two failures and their respective reporting are verified:
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#
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# 1 - Failures during slave thread initialization
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# 2 - Failures while processing queries passed through the init_slave
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# option.
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#
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# In order to check the first type of failure, we inject a fault in the
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# SQL/IO Threads through SET GLOBAL debug.
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#
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# To check the second type, we set @@global.init_slave to an invalid
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# command thus preventing the initialization of the SQL Thread.
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#
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# Obs:
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# 1 - Note that testing failures while initializing the relay log position
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# is hard as the same function is called before the code reaches the point
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# that we want to test.
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#
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# 2 - This test does not target failures that are reported while applying
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# events such as duplicate keys, errors while reading the relay-log.bin*,
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# etc. Such errors are already checked on other tests.
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######################################################################
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######################################################################
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# Configuring the Environment
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######################################################################
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source include/have_debug.inc;
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source include/master-slave.inc;
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source include/have_log_bin.inc;
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connection slave;
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--disable_warnings
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stop slave;
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--enable_warnings
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reset slave;
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######################################################################
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# Injecting faults in the threads' initialization
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######################################################################
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connection slave;
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# Set debug flags on slave to force errors to occur
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SET GLOBAL debug= "d,simulate_io_slave_error_on_init,simulate_sql_slave_error_on_init";
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start slave;
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#
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# slave is going to stop because of emulated failures
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# but there won't be any crashes nor asserts hit.
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#
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# 1593 = ER_SLAVE_FATAL_ERROR
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--let $slave_sql_errno= 1593
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--let $show_slave_sql_error= 1
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--source include/wait_for_slave_sql_error.inc
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call mtr.add_suppression("Failed during slave I/O thread initialization");
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SET GLOBAL debug= "";
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######################################################################
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# Injecting faults in the init_slave option
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######################################################################
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connection slave;
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reset slave;
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SET GLOBAL init_slave= "garbage";
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start slave;
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# 1064 = ER_PARSE_ERROR
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--let $slave_sql_errno= 1064
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--let $show_slave_sql_error= 1
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--source include/wait_for_slave_sql_error.inc
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######################################################################
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# Clean up
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######################################################################
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SET GLOBAL init_slave= "";
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# Clean up Last_SQL_Error
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--source include/stop_slave_io.inc
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RESET SLAVE;
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--let $rpl_only_running_threads= 1
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--source include/rpl_end.inc
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