The prefix was always added even when the original version would've been
acceptable. For example, a version string of 5.5.40 would get converted to
5.5.5-5.5.40 which is quite confusing for older client applications.
Due to MDEV-15556 and MDEV-15840 recursive CTEs can't be reliably used
with older 10.2 versions. To prevent problems, only use the query that
extracts composite roles with newer versions.
* add possibility to run named test
* remove sysbench_dir
* remove unsupported in 1.0 sysbench options
* exculed ReadConnRouter sysbench test
* fix sysbench table name
Since we know the worst-case size of a canonical statement is the size of
the query string, we can reduce the number of memory allocations to one in
the get_canonical function.
The information stored for each prepared statement would not be cleared
until the end of the session. This is a problem if the sessions last for a
very long time as the stored information is unused once a COM_STMT_CLOSE
has been received.
In addition to this, the session command response maps were not cleared
correctly if all backends had processed all session commands.
When a response to a prepared statement was processed, the number of EOF
packets was used to see whether the response was complete. This code used
a function that does not work with the special packet returned by a PS
preparation that is similar to an OK packet.
The correct method is to count the total number of packets in the
response.
The deleter for std::unique_ptr<GWBUF> was not included in that file which
caused it to be deleted with the default deleter. The same should apply to
std::unique_ptr<json_t> as well.
The script generates files owned by root so it needs to be removed with
sudo. As the removal of the directory is the last command, its failure
causes the script to fail.
The script generates files owned by root so it needs to be removed with
sudo. As the removal of the directory is the last command, its failure
causes the script to fail.
Under heavy load some of the basic network operations could fail which led
to some of the allocated memory to leak.
Also the backend protocol never freed the current protocol command if it
was not completed. This would happen if a user executed a session command
as the first command but backend authentication would fail.
The authentication code did not initialize one of the buffers used to
calculate the password hashes. This resulted in the use of uninitialized
memory when the user provided no password.
The test now uses maxctrl to count how many connections there are. This
helps avoid creating new users on the database and works around the slave
syncing problems.
