MDEV-742: read-only, pure myisam, binlog-*, @@skip_log_bin corner cases

(Pushed to 10.5)
Are addressed along the following policies.
Prepared read-only, or on non-transactional engines, or
binlog-* filter in binlog, or skipped to binlog XA:s remains in the xid cache after disconnect.
But their consequent completion with Commit or Rollback differs.

1. The read-only at reconnect marks XID to fail for future
completion with ER_XA_RBROLLBACK.

2. `binlog-*` filtered XA when it changes engine data is regarded
as loggable even when nothing got cached for binlog.
An empty XA-prepare group is recorded. Consequent Commit-or-Rollback
succeeds in the Engine(s) as well as recorded into binlog.

3. The same applies to the non-transactional engine XA.

4. @@skip_log_bin=OFF does not record anything at XA-prepare (obviously),
but the completion event is recorded into binlog to admit
inconsistency with slave.

The following actions are taken by the patch.

At XA-prepare:
  when empty binlog cache - don't do anything to binlog if RO,
  otherwise write empty XA_prepare (assert(binlog-filter case)).
At Disconnect:
  when Prepared && RO (=> no binlogging was done)
    set Xid_cache_element::error := ER_XA_RBROLLBACK
    *keep* XID in the cache, and rollback the transaction.
At XA-"complete":
   Discover the error, if any don't binlog the "complete", return the error to the user.

RO patch review notes.

mysql-test/main/xa_sync.test

@@ -38,7 +38,7 @@ while ($i)
   --echo *** Must have 'xatest' in the list
   XA RECOVER;
   # second time yields no error
-  --error 0
+  --error 0,1402
   --eval $op
   disconnect con2;
 

mysql-test/suite/binlog/include/binlog_xa_prepare_disconnect.inc

@@ -23,6 +23,7 @@ XA RECOVER;
 --source include/wait_condition.inc
 
 # It will conclude now
+--error 0,1402
 --eval  $terminate_with 'trx1$type'
 
 --replace_result $conn3_id CONN_ID
@@ -32,4 +33,5 @@ XA RECOVER;
 --source include/wait_condition.inc
 
 # It will conclude now
+--error 0,1402
 --eval  $terminate_with 'trx3$type'

mysql-test/suite/rpl/r/rpl_xa.result

@@ -44,5 +44,181 @@ connection slave;
 include/diff_tables.inc [master:t1, slave:t1]
 include/diff_tables.inc [master:t2, slave:t2]
 connection master;
-drop table t1, t2;
+*** At the start of read-only section gtid list is:
+flush logs;
+show binlog events in 'master-bin.000002' limit 1,1;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000002	#	Gtid_list	1	#	[0-1-11]
+set @query1="select 1";
+set @query2="select count(*) into @s2 from t1";
+connection master;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+xa start 'ro_2';
+select count(*) into @s2 from t1;
+xa end 'ro_2';
+xa prepare 'ro_2';;
+disconnect master_ro_2;
+connection master;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+xa start 'ro_1';
+select 1;
+1
+1
+xa end 'ro_1';
+xa prepare 'ro_1';;
+disconnect master_ro_1;
+connection master;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+xa start 'ro_2';
+select count(*) into @s2 from t1;
+xa end 'ro_2';
+xa prepare 'ro_2';;
+disconnect master_ro_2;
+connection master;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+xa start 'ro_1';
+select 1;
+1
+1
+xa end 'ro_1';
+xa prepare 'ro_1';;
+disconnect master_ro_1;
+*** 2 prepared xa:s must be in the list:
+connection master;
+xa recover;
+formatID	gtrid_length	bqual_length	data
+1	4	0	ro_2
+1	4	0	ro_1
+*** Zero prepared xa:s must be in the list:
+xa recover;
+formatID	gtrid_length	bqual_length	data
+*** At the end of read-only section gtid list has 0 more compare with previous check:
+flush logs;
+show binlog events in 'master-bin.000003' limit 1,1;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000003	#	Gtid_list	1	#	[0-1-11]
+create database test_ign;
+set @@sql_log_bin = 0;
+create table test_ign.t (a int) engine=InnoDB;
+set @@sql_log_bin = 1;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+xa start 'rw_no_binlog';
+insert into test_ign.t set a=1;
+xa end 'rw_no_binlog';
+xa prepare 'rw_no_binlog';;
+disconnect master_rw_no_binlog;
+*** rw_no_binlog must be in the list:
+connection master;
+xa recover;
+formatID	gtrid_length	bqual_length	data
+1	12	0	rw_no_binlog
+*** Zero must be in the list:
+connection master;
+xa recover;
+formatID	gtrid_length	bqual_length	data
+*** At the end of --binlog-ignore-db section gtid list has 2 more:
+flush logs;
+show binlog events in 'master-bin.000004' limit 1,1;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000004	#	Gtid_list	1	#	[0-1-13]
+connection master;
+create table t3 (a int) engine=innodb;
+*** the disconnected prepare case
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+set @@binlog_format=statement;
+xa start 'rw_binlog_only';
+delete from t3;
+xa end 'rw_binlog_only';
+xa prepare 'rw_binlog_only';
+disconnect master_rw_binlog_only;
+connection master;
+*** rw_binlog_only must be in the list:
+xa recover;
+formatID	gtrid_length	bqual_length	data
+1	14	0	rw_binlog_only
+*** Zero must be in the list:
+xa recover;
+formatID	gtrid_length	bqual_length	data
+*** the same connection complete case.
+connection master;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+set @@binlog_format=statement;
+xa start 'rw_binlog_only';
+delete from t3;
+xa end 'rw_binlog_only';
+xa prepare 'rw_binlog_only';
+*** rw_binlog_only must be in the list:
+xa recover;
+formatID	gtrid_length	bqual_length	data
+1	14	0	rw_binlog_only
+disconnect master_rw_binlog_only;
+*** Zero must be in the list:
+connection master;
+xa recover;
+formatID	gtrid_length	bqual_length	data
+*** At the end of ineffective in engine section gtid list has 5 more:
+flush logs;
+show binlog events in 'master-bin.000005' limit 1,1;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000005	#	Gtid_list	1	#	[0-1-18]
+create table tm (a int) engine=myisam;
+connection master;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+xa start 'rw_myisam';
+insert into tm set a=1;
+xa end 'rw_myisam';
+xa prepare 'rw_myisam';;
+disconnect master_rw_myisam;
+connection master;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+xa start 'rw_myisam';
+insert into tm set a=1;
+xa end 'rw_myisam';
+xa prepare 'rw_myisam';;
+disconnect master_rw_myisam;
+*** rw_myisam prepared must be in the list:
+connection master;
+xa recover;
+formatID	gtrid_length	bqual_length	data
+1	9	0	rw_myisam
+*** Zero prepared xa:s must be in the list:
+xa recover;
+formatID	gtrid_length	bqual_length	data
+*** At the end of MyISAM "xa" section gtid list has 7 more compare with previous check:
+flush logs;
+show binlog events in 'master-bin.000006' limit 1,1;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000006	#	Gtid_list	1	#	[0-1-25]
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+set @@session.sql_log_bin = OFF;
+xa start 'skip_binlog';
+insert into t2 values(1);
+xa end 'skip_binlog';
+xa prepare 'skip_binlog';
+disconnect master_skip_binlog;
+*** skip_binlog must be in the list:
+connection master;
+xa recover;
+formatID	gtrid_length	bqual_length	data
+1	11	0	skip_binlog
+connection master;
+call mtr.add_suppression("Slave: XAER_NOTA: Unknown XID");
+xa rollback 'skip_binlog';
+*** Zero must be in the list:
+connection master;
+xa recover;
+formatID	gtrid_length	bqual_length	data
+*** At the end of --binlog-ignore-db section gtid list has 2 more:
+flush logs;
+show binlog events in 'master-bin.000007' limit 1,1;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000007	#	Gtid_list	1	#	[0-1-27]
+include/save_master_gtid.inc
+connection slave;
+include/wait_for_slave_sql_error.inc [errno=1397]
+set @@global.sql_slave_skip_counter= 1;
+include/start_slave.inc
+connection master;
+drop database test_ign;
+drop table t1, t2, t3, tm;
 include/rpl_end.inc

mysql-test/suite/rpl/r/rpl_xa_gtid_pos_auto_engine.result

@@ -53,7 +53,183 @@ connection slave;
 include/diff_tables.inc [master:t1, slave:t1]
 include/diff_tables.inc [master:t2, slave:t2]
 connection master;
-drop table t1, t2;
+*** At the start of read-only section gtid list is:
+flush logs;
+show binlog events in 'master-bin.000002' limit 1,1;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000002	#	Gtid_list	1	#	[0-1-11]
+set @query1="select 1";
+set @query2="select count(*) into @s2 from t1";
+connection master;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+xa start 'ro_2';
+select count(*) into @s2 from t1;
+xa end 'ro_2';
+xa prepare 'ro_2';;
+disconnect master_ro_2;
+connection master;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+xa start 'ro_1';
+select 1;
+1
+1
+xa end 'ro_1';
+xa prepare 'ro_1';;
+disconnect master_ro_1;
+connection master;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+xa start 'ro_2';
+select count(*) into @s2 from t1;
+xa end 'ro_2';
+xa prepare 'ro_2';;
+disconnect master_ro_2;
+connection master;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+xa start 'ro_1';
+select 1;
+1
+1
+xa end 'ro_1';
+xa prepare 'ro_1';;
+disconnect master_ro_1;
+*** 2 prepared xa:s must be in the list:
+connection master;
+xa recover;
+formatID	gtrid_length	bqual_length	data
+1	4	0	ro_2
+1	4	0	ro_1
+*** Zero prepared xa:s must be in the list:
+xa recover;
+formatID	gtrid_length	bqual_length	data
+*** At the end of read-only section gtid list has 0 more compare with previous check:
+flush logs;
+show binlog events in 'master-bin.000003' limit 1,1;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000003	#	Gtid_list	1	#	[0-1-11]
+create database test_ign;
+set @@sql_log_bin = 0;
+create table test_ign.t (a int) engine=InnoDB;
+set @@sql_log_bin = 1;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+xa start 'rw_no_binlog';
+insert into test_ign.t set a=1;
+xa end 'rw_no_binlog';
+xa prepare 'rw_no_binlog';;
+disconnect master_rw_no_binlog;
+*** rw_no_binlog must be in the list:
+connection master;
+xa recover;
+formatID	gtrid_length	bqual_length	data
+1	12	0	rw_no_binlog
+*** Zero must be in the list:
+connection master;
+xa recover;
+formatID	gtrid_length	bqual_length	data
+*** At the end of --binlog-ignore-db section gtid list has 2 more:
+flush logs;
+show binlog events in 'master-bin.000004' limit 1,1;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000004	#	Gtid_list	1	#	[0-1-13]
+connection master;
+create table t3 (a int) engine=innodb;
+*** the disconnected prepare case
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+set @@binlog_format=statement;
+xa start 'rw_binlog_only';
+delete from t3;
+xa end 'rw_binlog_only';
+xa prepare 'rw_binlog_only';
+disconnect master_rw_binlog_only;
+connection master;
+*** rw_binlog_only must be in the list:
+xa recover;
+formatID	gtrid_length	bqual_length	data
+1	14	0	rw_binlog_only
+*** Zero must be in the list:
+xa recover;
+formatID	gtrid_length	bqual_length	data
+*** the same connection complete case.
+connection master;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+set @@binlog_format=statement;
+xa start 'rw_binlog_only';
+delete from t3;
+xa end 'rw_binlog_only';
+xa prepare 'rw_binlog_only';
+*** rw_binlog_only must be in the list:
+xa recover;
+formatID	gtrid_length	bqual_length	data
+1	14	0	rw_binlog_only
+disconnect master_rw_binlog_only;
+*** Zero must be in the list:
+connection master;
+xa recover;
+formatID	gtrid_length	bqual_length	data
+*** At the end of ineffective in engine section gtid list has 5 more:
+flush logs;
+show binlog events in 'master-bin.000005' limit 1,1;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000005	#	Gtid_list	1	#	[0-1-18]
+create table tm (a int) engine=myisam;
+connection master;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+xa start 'rw_myisam';
+insert into tm set a=1;
+xa end 'rw_myisam';
+xa prepare 'rw_myisam';;
+disconnect master_rw_myisam;
+connection master;
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+xa start 'rw_myisam';
+insert into tm set a=1;
+xa end 'rw_myisam';
+xa prepare 'rw_myisam';;
+disconnect master_rw_myisam;
+*** rw_myisam prepared must be in the list:
+connection master;
+xa recover;
+formatID	gtrid_length	bqual_length	data
+1	9	0	rw_myisam
+*** Zero prepared xa:s must be in the list:
+xa recover;
+formatID	gtrid_length	bqual_length	data
+*** At the end of MyISAM "xa" section gtid list has 7 more compare with previous check:
+flush logs;
+show binlog events in 'master-bin.000006' limit 1,1;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000006	#	Gtid_list	1	#	[0-1-25]
+connect  master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,;
+set @@session.sql_log_bin = OFF;
+xa start 'skip_binlog';
+insert into t2 values(1);
+xa end 'skip_binlog';
+xa prepare 'skip_binlog';
+disconnect master_skip_binlog;
+*** skip_binlog must be in the list:
+connection master;
+xa recover;
+formatID	gtrid_length	bqual_length	data
+1	11	0	skip_binlog
+connection master;
+call mtr.add_suppression("Slave: XAER_NOTA: Unknown XID");
+xa rollback 'skip_binlog';
+*** Zero must be in the list:
+connection master;
+xa recover;
+formatID	gtrid_length	bqual_length	data
+*** At the end of --binlog-ignore-db section gtid list has 2 more:
+flush logs;
+show binlog events in 'master-bin.000007' limit 1,1;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000007	#	Gtid_list	1	#	[0-1-27]
+include/save_master_gtid.inc
+connection slave;
+include/wait_for_slave_sql_error.inc [errno=1397]
+set @@global.sql_slave_skip_counter= 1;
+include/start_slave.inc
+connection master;
+drop database test_ign;
+drop table t1, t2, t3, tm;
 connection slave;
 include/stop_slave.inc
 SET @@global.gtid_pos_auto_engines="";

mysql-test/suite/rpl/t/rpl_create_xa_prepared.inc

+# param $xid    to name xa and take part in the connection name
+# param $query  to execute as the xa body
+# param $db_ign the default database
+
+--connect (master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,)
+--eval xa start '$xid'
+--eval $query
+--eval xa end '$xid'
+--eval xa prepare '$xid';

mysql-test/suite/rpl/t/rpl_xa-master.opt

+--binlog-ignore-db=test_ign

mysql-test/suite/rpl/t/rpl_xa.inc

@@ -69,5 +69,286 @@ source include/diff_tables.inc;
 let $diff_tables= master:t2, slave:t2;
 source include/diff_tables.inc;
 
+#
+# Read-only XA remains prepared after disconnect and must rollback at XA-complete
+# after recoonect. To the read-only also belongs non-transactional engine XA.
+#
+--connection master
+
+--echo *** At the start of read-only section gtid list is:
+flush logs;
+--let $binlog_file= query_get_value(SHOW MASTER STATUS, File, 1)
+--source include/show_gtid_list.inc
+
+
+set @query1="select 1";
+set @query2="select count(*) into @s2 from t1";
+--let $ro_cases=2
+--let $db=test
+
+# No disconnect
+--let $p_trx=$ro_cases
+while ($p_trx)
+{
+--connection master
+  --let $xid=ro_$p_trx
+  --let $query=`SELECT @query$p_trx`
+  --source rpl_create_xa_prepared.inc
+  --let $complete=`select if(floor(rand()*10)%2,'COMMIT','ROLLBACK')`
+  --error 0
+  --disable_query_log
+  --disable_result_log
+  --eval xa $complete '$xid'
+  --enable_result_log
+  --enable_query_log
+
+  --disconnect master_$xid
+  --source include/wait_until_disconnected.inc
+
+  --dec $p_trx
+}
+
+
+--let $p_trx=$ro_cases
+# With diconnect
+while ($p_trx)
+{
+--connection master
+  --let $xid=ro_$p_trx
+  --let $query=`SELECT @query$p_trx`
+  --source rpl_create_xa_prepared.inc
+
+  --disconnect master_$xid
+  --source include/wait_until_disconnected.inc
+
+  --dec $p_trx
+}
+
+--echo *** $ro_cases prepared xa:s must be in the list:
+--connection master
+xa recover;
+
+--let $p_trx=$ro_cases
+while ($p_trx)
+{
+  --let $xid=ro_$p_trx
+  --let $complete=`select if(floor(rand()*10)%2,'COMMIT','ROLLBACK')`
+  --disable_query_log
+  --disable_result_log
+  --error ER_XA_RBROLLBACK
+  --eval xa $complete '$xid'
+  --enable_result_log
+  --enable_query_log
+
+  --dec $p_trx
+}
+--echo *** Zero prepared xa:s must be in the list:
+xa recover;
+
+--echo *** At the end of read-only section gtid list has 0 more compare with previous check:
+flush logs;
+--let $binlog_file= query_get_value(SHOW MASTER STATUS, File, 1)
+--source include/show_gtid_list.inc
+
+
+#
+# XA logging cases while some of XA resources are read-only
+#
+# A1. Binlog filter
+
+
+--let $db=test_ign
+--eval create database $db
+set @@sql_log_bin = 0;
+--eval create table $db.t (a int) engine=InnoDB
+set @@sql_log_bin = 1;
+
+--let $xid=rw_no_binlog
+--let $query=insert into $db.t set a=1
+--source rpl_create_xa_prepared.inc
+--disconnect master_$xid
+--source include/wait_until_disconnected.inc
+
+--echo *** $xid must be in the list:
+--connection master
+xa recover;
+
+--let $complete=`select if(floor(rand()*10)%2,'COMMIT','ROLLBACK')`
+--error 0
+--disable_query_log
+--disable_result_log
+--eval xa $complete '$xid'
+--enable_result_log
+--enable_query_log
+
+--echo *** Zero must be in the list:
+--connection master
+xa recover;
+# restore for the following tests
+--let $db=test
+
+--echo *** At the end of --binlog-ignore-db section gtid list has 2 more:
+flush logs;
+--let $binlog_file= query_get_value(SHOW MASTER STATUS, File, 1)
+--source include/show_gtid_list.inc
+
+#
+# A2. Opposite to A1, ineffective execution in Engine may create a
+#     binlog transaction
+#
+connection master;
+create table t3 (a int) engine=innodb;
+
+--echo *** the disconnected prepare case
+--let $xid=rw_binlog_only
+--let $query=delete from t3
+--connect (master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,)
+  set @@binlog_format=statement;
+  # --source rpl_create_xa_prepared.inc
+  --eval xa start '$xid'
+  --eval $query
+  --eval xa end '$xid'
+  --eval xa prepare '$xid'
+
+  --disconnect master_$xid
+  --source include/wait_until_disconnected.inc
+
+connection master;
+--echo *** $xid must be in the list:
+xa recover;
+
+  --let $complete=`select if(floor(rand()*10)%2,'COMMIT','ROLLBACK')`
+  --disable_query_log
+  --disable_result_log
+  --eval xa $complete '$xid'
+  --enable_result_log
+  --enable_query_log
+
+--echo *** Zero must be in the list:
+xa recover;
+
+--echo *** the same connection complete case.
+connection master;
+  --let $xid=rw_binlog_only
+  --let $query=delete from t3
+--connect (master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,)
+  set @@binlog_format=statement;
+  # --source rpl_create_xa_prepared.inc
+  --eval xa start '$xid'
+  --eval $query
+  --eval xa end '$xid'
+  --eval xa prepare '$xid'
+
+--echo *** $xid must be in the list:
+xa recover;
+
+--disable_query_log
+  --disable_result_log
+  --eval xa $complete '$xid'
+  --enable_result_log
+  --enable_query_log
+--disconnect master_$xid
+--source include/wait_until_disconnected.inc
+
+--echo *** Zero must be in the list:
+--connection master
+xa recover;
+
+--echo *** At the end of ineffective in engine section gtid list has 5 more:
+flush logs;
+--let $binlog_file= query_get_value(SHOW MASTER STATUS, File, 1)
+--source include/show_gtid_list.inc
+
+#
+# A3 MyISAM "xa" logs empty XA-prepare group, followed by
+#     an XA-complete event
+create table tm (a int) engine=myisam;
+
+# No disconnect
+--connection master
+  --let $xid=rw_myisam
+  --let $query=insert into tm set a=1
+  --source rpl_create_xa_prepared.inc
+  --let $complete=`select if(floor(rand()*10)%2,'COMMIT','ROLLBACK')`
+  --error 0
+  --disable_query_log
+  --disable_result_log
+  --eval xa $complete '$xid'
+  --enable_result_log
+  --enable_query_log
+
+  --disconnect master_$xid
+  --source include/wait_until_disconnected.inc
+
+# With diconnect
+--connection master
+  --source rpl_create_xa_prepared.inc
+  --disconnect master_$xid
+  --source include/wait_until_disconnected.inc
+
+--echo *** $xid prepared must be in the list:
+--connection master
+xa recover;
+
+  --let $complete=`select if(floor(rand()*10)%2,'COMMIT','ROLLBACK')`
+  --disable_query_log
+  --disable_result_log
+  --eval xa $complete '$xid'
+  --enable_result_log
+  --enable_query_log
+
+--echo *** Zero prepared xa:s must be in the list:
+xa recover;
+
+--echo *** At the end of MyISAM "xa" section gtid list has 7 more compare with previous check:
+flush logs;
+--let $binlog_file= query_get_value(SHOW MASTER STATUS, File, 1)
+--source include/show_gtid_list.inc
+
+
+# B. Session binlog disable does not log even empty XA-prepare but XA-complete will be
+# logged despite of that.
+
+--let $db=test
+--let $xid=skip_binlog
+--let $query=insert into t2 values(1)
+--connect (master_$xid, 127.0.0.1,root,,$db,$MASTER_MYPORT,)
+set @@session.sql_log_bin = OFF;
+--eval xa start '$xid'
+  --eval $query
+--eval xa end '$xid'
+--eval xa prepare '$xid'
+
+--disconnect master_$xid
+--source include/wait_until_disconnected.inc
+
+--echo *** $xid must be in the list:
+--connection master
+xa recover;
+
+--connection master
+call mtr.add_suppression("Slave: XAER_NOTA: Unknown XID");
+--eval xa rollback '$xid'
+
+--echo *** Zero must be in the list:
+--connection master
+xa recover;
+
+--echo *** At the end of --binlog-ignore-db section gtid list has 2 more:
+flush logs;
+--let $binlog_file= query_get_value(SHOW MASTER STATUS, File, 1)
+--source include/show_gtid_list.inc
+--source include/save_master_gtid.inc
+
+#
+# Expected error on slave and manual correction
+#
+--connection slave
+let $slave_sql_errno= 1397; # ER_XAER_NOTA
+source include/wait_for_slave_sql_error.inc;
+set @@global.sql_slave_skip_counter= 1;
+--source include/start_slave.inc
+
 connection master;
-drop table t1, t2;
+--eval drop database test_ign
+drop table t1, t2, t3, tm;

mysql-test/suite/rpl/t/rpl_xa_gtid_pos_auto_engine-master.opt

+--binlog-ignore-db=test_ign

sql/handler.cc

@@ -1367,6 +1367,29 @@ int ha_prepare(THD *thd)
   DBUG_RETURN(error);
 }
 
+/*
+  Like ha_check_and_coalesce_trx_read_only to return counted number of
+  read-write transaction participants limited to two, but works in the 'all'
+  context.
+  Also returns the last found rw ha_info through the 2nd argument.
+*/
+uint ha_count_rw_all(THD *thd, Ha_trx_info **ptr_ha_info)
+{
+  unsigned rw_ha_count= 0;
+
+  for (auto ha_info= thd->transaction.all.ha_list; ha_info;
+       ha_info= ha_info->next())
+  {
+    if (ha_info->is_trx_read_write())
+    {
+      *ptr_ha_info= ha_info;
+      if (++rw_ha_count > 1)
+        break;
+    }
+  }
+  return rw_ha_count;
+}
+
 /**
   Check if we can skip the two-phase commit.
 

sql/handler.h

@@ -5173,4 +5173,5 @@ void print_keydup_error(TABLE *table, KEY *key, myf errflag);
 
 int del_global_index_stat(THD *thd, TABLE* table, KEY* key_info);
 int del_global_table_stat(THD *thd, const  LEX_CSTRING *db, const LEX_CSTRING *table);
+uint ha_count_rw_all(THD *thd, Ha_trx_info **ptr_ha_info);
 #endif /* HANDLER_INCLUDED */

sql/log.cc

@@ -2040,8 +2040,8 @@ static int binlog_rollback_by_xid(handlerton *hton, XID *xid)
 
   (void) thd->binlog_setup_trx_data();
 
-  DBUG_ASSERT(thd->lex->sql_command == SQLCOM_XA_ROLLBACK);
-
+  DBUG_ASSERT(thd->lex->sql_command == SQLCOM_XA_ROLLBACK ||
+              (thd->transaction.xid_state.get_state_code() == XA_ROLLBACK_ONLY));
   return binlog_rollback(hton, thd, TRUE);
 }
 
@@ -10009,6 +10009,10 @@ int TC_LOG_BINLOG::unlog(ulong cookie, my_xid xid)
   DBUG_RETURN(BINLOG_COOKIE_GET_ERROR_FLAG(cookie));
 }
 
+static bool write_empty_xa_prepare(THD *thd, binlog_cache_mngr *cache_mngr)
+{
+  return binlog_commit_flush_xa_prepare(thd, true, cache_mngr);
+}
 
 int TC_LOG_BINLOG::unlog_xa_prepare(THD *thd, bool all)
 {
@@ -10017,10 +10021,28 @@ int TC_LOG_BINLOG::unlog_xa_prepare(THD *thd, bool all)
   binlog_cache_mngr *cache_mngr= thd->binlog_setup_trx_data();
   int cookie= 0;
 
-  if (!cache_mngr || !cache_mngr->need_unlog)
-    return 0;
-  else
-    cookie= BINLOG_COOKIE_MAKE(cache_mngr->binlog_id, cache_mngr->delayed_error);
+  if (!cache_mngr->need_unlog)
+  {
+    Ha_trx_info *ha_info;
+    uint rw_count= ha_count_rw_all(thd, &ha_info);
+    bool rc= false;
+
+    if (rw_count > 0)
+    {
+      /* an empty XA-prepare event group is logged */
+#ifndef DBUG_OFF
+      for (ha_info= thd->transaction.all.ha_list; rw_count > 1 && ha_info;
+           ha_info= ha_info->next())
+        DBUG_ASSERT(ha_info->ht() != binlog_hton);
+#endif
+      rc= write_empty_xa_prepare(thd, cache_mngr); // normally gains need_unlog
+      trans_register_ha(thd, true, binlog_hton, 0); // do it for future commmit
+    }
+    if (rw_count == 0 || !cache_mngr->need_unlog)
+      return rc;
+  }
+
+  cookie= BINLOG_COOKIE_MAKE(cache_mngr->binlog_id, cache_mngr->delayed_error);
   cache_mngr->need_unlog= false;
 
   return unlog(cookie, 1);

sql/xa.cc

@@ -820,6 +820,12 @@ bool trans_xa_detach(THD *thd)
 
   if (thd->transaction.xid_state.xid_cache_element->xa_state != XA_PREPARED)
     return xa_trans_force_rollback(thd);
+  else if (!thd->transaction.all.is_trx_read_write())
+  {
+    thd->transaction.xid_state.set_error(ER_XA_RBROLLBACK);
+    ha_rollback_trans(thd, true);
+  }
+
   thd->transaction.xid_state.xid_cache_element->acquired_to_recovered();
   thd->transaction.xid_state.xid_cache_element= 0;
   thd->transaction.cleanup();