Do not allow server to start if binlog_format is set
to a format other than ROW. Also restrict the change
of GLOBAL/SESSION binlog_format value at runtime.
Decoupled wsrep thread count from connection count. By doing so,
the number of wsrep threads (applier/rollbacker) would no longer
affect the threads_connected status variable and thus maximum
allowable user connections limit would be @@max_connections.
Also introduced a new status variable 'wsrep_thread_count' to hold
the number of wsrep applier/rollbacker threads.
Added a test case.
mysql_tzinfo_to_sql tries to set wsrep_replicate_myisam
as SESSION variable, while its a GLOBAL-only system variable,
and thus the resulting sql would fail to load.
Fixed by changing the scope to GLOBAL in the SET command.
Also added following include files to facilitate testing :
* include/have_wsrep.inc
* include/not_wsrep.inc
* include/have_wsrep_enabled.inc
Analysis: Currently you can set binlog_format to STATEMENT or MIXED
even when they are not really supported by galera.
Fix: Produce an error message if binlog_format is set to STATEMENT
or MIXED and wsrep_on = ON. Added a test case for this.
(thd && thd->variables.wsrep_on)) && wsrep_emulate_bin_log) ||
mysql_bin_log .is_open()' fails on SAVEPOINT with disabled
wsrep_provider
As wsrep_on system variable is ON by default the binlog handlerton
is implicitly enabled during the server initialization phase. Later,
while wsrep plugin is getting initialized, wsrep_on in corrected &
turned OFF in case wsrep provider is not specified (leaving binlog
in ON state!). This leads to the reported assertion.
Fixed by adding another check for wsrep provider before binlog
is enabled.
Added a test case.
