MDEV-4816: rpl.rpl_trunc_temp fails in 10.0-serg

Temorary fix for a number of replication tests (rpl.rpl_temp_table_mix_row 
rpl.rpl_trunc_temp rpl.rpl_current_user rpl.rpl_gtid_master_promote):

- THD::decide_logging_format() should not assume that mysql.gtid_slave_pos is 
  a non-replicated table. This used to cause unintended behavior for COMMIT 
  statement: replication would switch to row-based, etc.

The question of what should be done when a user issues a statement that
explicitly modifies mysql.gtid_slave_pos table remains open.

1 files changed, 2 insertions, 0 deletions

diff --git a/sql/rpl_gtid.cc b/sql/rpl_gtid.cc
index 4783fb763c8..05ac79a8f64 100644
--- a/sql/rpl_gtid.cc
+++ b/sql/rpl_gtid.cc
@@ -210,6 +210,7 @@ rpl_slave_state::truncate_state_table(THD *thd)
   {
     table= tlist.table;
     table->no_replicate= 1;
+    table->s->is_gtid_slave_pos= TRUE; // TEMPORARY CODE
     err= table->file->ha_truncate();
 
     if (err)
@@ -346,6 +347,7 @@ rpl_slave_state::record_gtid(THD *thd, const rpl_gtid *gtid, uint64 sub_id,
     goto end;
 
   table->no_replicate= 1;
+  table->s->is_gtid_slave_pos= TRUE; // TEMPORARY CODE
   if (!in_transaction)
     thd->variables.option_bits&=
       ~(ulonglong)(OPTION_NOT_AUTOCOMMIT|OPTION_BEGIN);