Readwritesplit would hang when the query execution is postponed due to the
fact that the target server is executing a session command. The number of
expected responses was incremented when no response was expected.
Auto-rejoin now explains more accurately if a server cannot be joined due
to conflicting gtid.
Also, auto-rejoin is no longer disabled if a join fails. Usually the fail
is due to the server not replying fast enough with query completion. The
query is often completed anyways. This can lead to some log spam.
Auto-failover is no longer considered to have failed if the preconditions
are not met. An error message with the failed checks is printed once, but
the checks are repeated every loop as long as the master is down.
In principle a syslog priority consists of a syslog level
bit-or:d with a syslog facility. That's clear from the syslog
man page, but not so clear from the code in syslog.h.
Anyway, to make it possible to log using a specific facility
(instead of the default LOG_USER), we must allow priorities
that include a specified facility.
The mysqlauth SQLite database is now opened in WAL mode if possible. This
should prevent lockups of the database when the list of users is updated.
Also moved the starting of the SQLite transaction one level up to also
include the delete part in it. This should further reduce the effects of
updating users.
When a client connection is closed by MaxScale before the client initiates
a controlled closing of the connection, an error message is sent. This
error message now also explains why the connection was closed to make
problem resolution easier.
The number of arguments to createListener was incremented but the maximum
count was not. Also fixed the parameter types for createListener and
alterServer.
Not yet used, as more is needed to replace the old code. The
algorithm is based on counting the total number of slave nodes
a server has, possibly in multiple layers and/or cycles.
The server runtime alteration was broken by commit
c850336199c3c19508a3d280fb7000291d66b80c when it increased the maximum
argument count of the `alter server` command to 14.
Replaced the HASHTABLE in galeramon with an std::unordered_map. This
simplifies the code by a great amount and makes it more readable. Removed
the extraneous functions that mostly logged debug information and
simplified the logic by removing redundant checks.
Servers in MaxScale can encrypt the connections without client keys and
certificates. As keys and certificates are no longer required, the CA
certificate must always be initialized.
The code in avrorouter that returned the current transaction was not very
useful and it can be acquired via the REST API in a more convenient
format.
The number of created sessions is tracked on the service level so there is
no need to track it in the avrorouter.
Removed declarations for functions that do not exist and moved code around
to reduce the scope.
The code that handles the Avro files is now fully abstracted behind the
AvroConverter class that implements the RowEventHandler interface.
The code still has some avro specific behavior in a few places (parsing of
JSON files into TableCreate objects). This can be replaced, if needed, by
querying the master server for the CREATE TABLE statements.
