By storing the queries in the query queue and routing it once the
transaction replay is done, we prevent two problems:
* Multiple transaction replays would overwrite the m_interrupted_query
buffer that was used to store any queries executed during the
transaction replay.
* Incorrect ordering of queries when the query queue is not empty and a
new query is executed during transaction replay.
If the session starts with no master but later one becomes available, when
a transaction is started the code would unconditionally use the master's
name in a log message.
maxscale-system-test changed in order to control test environment by itself.
Every test checks which machines are running, compare with list of needed machines
and start new VMs is they are missing in the running machines list.
Tests are executiong MDBCI commands, MDBCI executable should be in the PATH
The masking_user test creates a database over a masked connection.
As 'CREATE DATABASE DB' is not fully parsed the test will fail since
it creates a database.
To allow the test to pass, we turn off the strict requirement that
all statements must be fully parsed.
If set to true and if any of the other blocking related parameters
is true, then a statement that cannot be fully parsed will be blocked.
Default is true.
The documentation stated that MVCC reads weren't safe with
transaction_replay when in reality they are not safe in general and
transaction_replay has no effect on it.
The function allocated a constant-sized chunk of memory for all messages
which was excessive as well as potentially dangerous when used with large
strings.
Queries such as SHOW TABLES FROM db1 are now routed to the backend with db1.
This gives the correct result as long as db1 is not sharded to multiple
backends.
The code only handled the basic version of the command, returning incorrect
results if modifiers were used. The code is now removed, causing the command
to be routed to the backend of the current database. This will give correct
results as long as that backend contains all the tables of the database e.g.
no table sharding.
Some SQL clients may default to a different authentication plugin than
"mysql_native_password". Since this is the only one supported by MySQL-
authenticator, the client is instructed to swap its plugin.
Because runtime changes are performed one at a time, adding replication credentials
to a mariadbmon which didn't have any would cause an error to be printed, and
the monitor would not start.
This is now fixed by allowing replication_user without replication_password. This
is not an ideal solution as a configuration file with only replication_user would be
accepted. Also, when adding the credentials to a monitor, replication_user must be
given first to avoid the error.
