Clean up and speed up interfaces for binary row logging

MDEV-21605 Clean up and speed up interfaces for binary row logging
MDEV-21617 Bug fix for previous version of this code

The intention is to have as few 'if' as possible in ha_write() and
related functions. This is done by pre-calculating once per statement the
row_logging state for all tables.

Benefits are simpler and faster code both when binary logging is disabled
and when it's enabled.

Changes:
- Added handler->row_logging to make it easy to check it table should be
  row logged. This also made it easier to disabling row logging for system,
  internal and temporary tables.
- The tables row_logging capabilities are checked once per "statements
  that updates tables" in THD::binlog_prepare_for_row_logging() which
  is called when needed from THD::decide_logging_format().
- Removed most usage of tmp_disable_binlog(), reenable_binlog() and
  temporary saving and setting of thd->variables.option_bits.
- Moved checks that can't change during a statement from
  check_table_binlog_row_based() to check_table_binlog_row_based_internal()
- Removed flag row_already_logged (used by sequence engine)
- Moved binlog_log_row() to a handler::
- Moved write_locked_table_maps() to THD::binlog_write_table_maps() as
  most other related binlog functions are in THD.
- Removed binlog_write_table_map() and binlog_log_row_internal() as
  they are now obsolete as 'has_transactions()' is pre-calculated in
  prepare_for_row_logging().
- Remove 'is_transactional' argument from binlog_write_table_map() as this
  can now be read from handler.
- Changed order of 'if's in handler::external_lock() and wsrep_mysqld.h
  to first evaluate fast and likely cases before more complex ones.
- Added error checking in ha_write_row() and related functions if
  binlog_log_row() failed.
- Don't clear check_table_binlog_row_based_result in
  clear_cached_table_binlog_row_based_flag() as it's not needed.
- THD::clear_binlog_table_maps() has been replaced with
  THD::reset_binlog_for_next_statement()
- Added 'MYSQL_OPEN_IGNORE_LOGGING_FORMAT' flag to open_and_lock_tables()
  to avoid calculating of binary log format for internal opens. This flag
  is also used to avoid reading statistics tables for internal tables.
- Added OPTION_BINLOG_LOG_OFF as a simple way to turn of binlog temporary
  for create (instead of using THD::sql_log_bin_off.
- Removed flag THD::sql_log_bin_off (not needed anymore)
- Speed up THD::decide_logging_format() by remembering if blackhole engine
  is used and avoid a loop over all tables if it's not used
  (the common case).
- THD::decide_logging_format() is not called anymore if no tables are used
  for the statement. This will speed up pure stored procedure code with
  about 5%+ according to some simple tests.
- We now get annotated events on slave if a CREATE ... SELECT statement
  is transformed on the slave from statement to row logging.
- In the original code, the master could come into a state where row
  logging is enforced for all future events if statement could be used.
  This is now partly fixed.

Other changes:
- Ensure that all tables used by a statement has query_id set.
- Had to restore the row_logging flag for not used tables in
  THD::binlog_write_table_maps (not normal scenario)
- Removed injector::transaction::use_table(server_id_type sid, table tbl)
  as it's not used.
- Cleaned up set_slave_thread_options()
- Some more DBUG_ENTER/DBUG_RETURN, code comments and minor indentation
  changes.
- Ensure we only call THD::decide_logging_format_low() once in
  mysql_insert() (inefficiency).
- Don't annotate INSERT DELAYED
- Removed zeroing pos_in_table_list in THD::open_temporary_table() as it's
  already 0

1 files changed, 1 insertions, 7 deletions

diff --git a/sql/events.cc b/sql/events.cc
index 91adc0c23ba..acf472736e8 100644
--- a/sql/events.cc
+++ b/sql/events.cc
@@ -1241,15 +1241,9 @@ Events::load_events_from_db(THD *thd)
                       TRUE);
 
 	/* All the dmls to mysql.events tables are stmt bin-logged. */
-        bool save_binlog_row_based;
-        if ((save_binlog_row_based= thd->is_current_stmt_binlog_format_row()))
-	  thd->set_current_stmt_binlog_format_stmt();
-
+        table->file->row_logging= 0;
         (void) table->file->ha_update_row(table->record[1], table->record[0]);
 
-        if (save_binlog_row_based)
-          thd->set_current_stmt_binlog_format_row();
-
         delete et;
         continue;
     }