* Total order isolation was started twice for FLUSH TABLES, from
reload_acl_and_cache() and from mysql_execute_command(). Removed
the reload_acl_and_cache() part.
* Removed PXC specific stuff from MTR tests
- Eliminates code duplication in query cache patch
- Reduces the number of iterations in mysql-wsrep#201.test
to shorten the execution time
- Adds a new test case that exercises more scenarios
The admin commands in question are:
> OPTIMIZE
> REPAIR
> ANALYZE
For LOCAL or NO_WRITE_TO_BINLOG invocations of these commands, ie
OPTIMIZE LOCAL TABLE <t1>
they are not binlogged as expected.
Also, in addition, they are not executed under TOI.
Hence, they are not propagated to other nodes.
The effect is same as that of wsrep_on=0.
Also added tests for this.
A WSREP_DEBUG for wsrep_register_hton has also been added.
The galera_flush_local test has also been updated for verifying that effects
of NO_WRITE_TO_BINLOG / LOCAL are equivalent to wsrep_on=0 from wsrep
perspective.
(cherry picked from commit 5065122f94a8002d4da231528a46f8d9ddbffdc2)
Conflicts:
sql/sql_admin.cc
sql/sql_reload.cc
sql/wsrep_hton.cc
- Fixes query cache so that it is aware of wsrep_sync_wait.
Query cache would return (possibly stale) results to the
client, regardless of the value of wsrep_sync_wait.
- Includes the test case that reproduced the issue.
- Removes useless call to wsrep_xid_init() in wsrep_apply_events().
Transaction's xid is already initialized at that point.
- Adds call to wsrep_set_SE_checkpoint() for committing TOI events
in the applier side.
- Includes test case that reproduced the issue.
As a fix for MDEV-8208, for initial wsrep threads, the
invocation of init_for_queries() was moved after plugins
were initialized. Due to which, OPTION_BEGIN bit of wsrep
applier THD (originally set in wsrep_replication_process)
got reset due to implicit commit within init_for_queries().
As a result, events from a multi-statement transaction from
another node were committed separately by the applier thread,
which leads to an assertion as they all carry same seqno.
Fixed by making sure that variable.option_bits are restored
post init_for_queries(). Also restored server_status.
Added a test case.
Before this, FLUSH TABLES and FLUSH TABLES t1 (REFRESH_TABLES hereafter) were executed locally,
which also had implications for GTID. MySQL async replication does
replicate FLUSH TABLES.
Hence, this commit
a) Adds REFRESH_TABLES to TOI.
b) Skips LOCK-based REFRESH_TABLES from TOI, ie. FLUSH TABLES WITH READ
LOCK and FLUSH TABLES FOR EXPORT.
c) Executes them after reload_acl_and_cache. This is done since
reload_acl_and_cache checks for thd->locked_tables_mode and does upgrade
of MDL locks accordingly. A failure here means REFRESH_TABLES cannot
run.
i) This is also important since LOCK TABLES is not replicated in
galera.
d) Test galera_flush has been modified for
i) wsrep_replicate_myisam SESSION variable.
ii) Testing REFRESH_TABLES.
iii) Testing REFRESH_TABLES + LOCK TABLES.
e) Use different WSREP_TO_ISOLATION_BEGIN for global FLUSH TABLES and FLUSH TABLES <table,>.
