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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.
64 lines
1.2 KiB
Plaintext
64 lines
1.2 KiB
Plaintext
#
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# Testing replication delay reporting (bug#29309)
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# there is an unavoidable non-determinism in the test
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# please compare the results with the comments
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#
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source include/master-slave.inc;
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connection slave;
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--echo # Second_behind reports 0
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let $status_items= Seconds_Behind_Master;
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source include/show_slave_status.inc;
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sleep 3;
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### bug emulation
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connection master;
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drop table if exists t1;
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create table t1 (f1 int);
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sleep 3;
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#connection slave;
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sync_slave_with_master;
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flush logs /* contaminate rli->last_master_timestamp */;
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connection slave;
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lock table t1 write;
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connection master;
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insert into t1 values (1);
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sleep 3;
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connection slave;
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--echo # bug emulated: reports slave threads starting time about 3*3 not 3 secs
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source include/show_slave_status.inc;
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unlock tables;
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connection master;
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sync_slave_with_master;
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### bugfix
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connection slave;
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flush logs /* this time rli->last_master_timestamp is not affected */;
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lock table t1 write;
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connection master;
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insert into t1 values (2);
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sleep 3;
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connection slave;
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--echo # reports the correct diff with master query time about 3+3 secs
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source include/show_slave_status.inc;
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unlock tables;
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connection master;
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drop table t1;
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--source include/rpl_end.inc
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