MDEV-26: Global transaction ID.

Test crashing the master, check that it recovers the binlog state.

Fix one bug introduced by previous commit (crash-recoved binlog state was
overwritten by loading stale binlog state file).

Fix Windows build error.

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

 include/rpl_init.inc [topology=1->2]
 *** Test crashing master, causing slave IO thread to reconnect while SQL thread is running ***
-SET sql_log_bin=0;
 ALTER TABLE mysql.rpl_slave_state ENGINE=InnoDB;
-SET sql_log_bin=1;
 CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
 INSERT INTO t1 VALUES (1, 0);
 include/stop_slave.inc
@@ -16,4 +14,47 @@ SELECT 1;
 Got one of the listed errors
 INSERT INTO t1 VALUES (1000, 3);
 DROP TABLE t1;
+*** Test crashing the master mysqld and check that binlog state is recovered. ***
+include/stop_slave.inc
+RESET MASTER;
+CHANGE MASTER TO master_gtid_pos='';
+RESET MASTER;
+SHOW BINLOG EVENTS IN 'master-bin.000001' LIMIT 1,1;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000001	#	Gtid_list	#	#	[]
+CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
+include/start_slave.inc
+SET gtid_domain_id= 1;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t1 VALUES (2);
+FLUSH LOGS;
+SET gtid_domain_id= 2;
+INSERT INTO t1 VALUES (3);
+FLUSH LOGS;
+show binary logs;
+Log_name	File_size
+master-bin.000001	#
+master-bin.000002	#
+master-bin.000003	#
+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	#	#	[1-1-3,2-1-4,0-1-1]
+SET SESSION debug_dbug="+d,crash_dispatch_command_before";
+SELECT 1;
+Got one of the listed errors
+show binary logs;
+Log_name	File_size
+master-bin.000001	#
+master-bin.000002	#
+master-bin.000003	#
+master-bin.000004	#
+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	#	#	[1-1-3,0-1-1,2-1-4]
+SELECT * FROM t1 ORDER BY a;
+a
+1
+2
+3
+DROP TABLE t1;
 include/rpl_end.inc

mysql-test/suite/rpl/t/rpl_gtid_crash.test

@@ -7,9 +7,7 @@
 --echo *** Test crashing master, causing slave IO thread to reconnect while SQL thread is running ***
 
 --connection server_1
-SET sql_log_bin=0;
 ALTER TABLE mysql.rpl_slave_state ENGINE=InnoDB;
-SET sql_log_bin=1;
 CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
 INSERT INTO t1 VALUES (1, 0);
 --save_master_pos
@@ -46,6 +44,7 @@ while ($1)
 SET SESSION debug_dbug="+d,crash_dispatch_command_before";
 --error 2006,2013
 SELECT 1;
+--source include/wait_until_disconnected.inc
 
 --remove_file $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
 --write_file $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
@@ -66,6 +65,65 @@ INSERT INTO t1 VALUES (1000, 3);
 --let $wait_condition= SELECT COUNT(*) = 1 FROM t1 WHERE b=3
 --source include/wait_condition.inc
 
+--connection server_1
+DROP TABLE t1;
+--save_master_pos
+
+--echo *** Test crashing the master mysqld and check that binlog state is recovered. ***
+--connection server_2
+--sync_with_master
+--source include/stop_slave.inc
+RESET MASTER;
+CHANGE MASTER TO master_gtid_pos='';
+
+--connection server_1
+RESET MASTER;
+--replace_column 2 # 4 # 5 #
+SHOW BINLOG EVENTS IN 'master-bin.000001' LIMIT 1,1;
+CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
+
+--connection server_2
+--source include/start_slave.inc
+
+--connection server_1
+SET gtid_domain_id= 1;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t1 VALUES (2);
+FLUSH LOGS;
+SET gtid_domain_id= 2;
+INSERT INTO t1 VALUES (3);
+FLUSH LOGS;
+--source include/show_binary_logs.inc
+--replace_column 2 # 4 # 5 #
+SHOW BINLOG EVENTS IN 'master-bin.000003' LIMIT 1,1;
+
+#--remove_file $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
+--write_file $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
+wait
+EOF
+
+SET SESSION debug_dbug="+d,crash_dispatch_command_before";
+--error 2006,2013
+SELECT 1;
+--source include/wait_until_disconnected.inc
+
+--remove_file $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
+--write_file $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
+restart
+EOF
+
+--enable_reconnect
+--source include/wait_until_connected_again.inc
+
+--source include/show_binary_logs.inc
+--replace_column 2 # 4 # 5 #
+SHOW BINLOG EVENTS IN 'master-bin.000004' LIMIT 1,1;
+--save_master_pos
+
+--connection server_2
+--sync_with_master
+SELECT * FROM t1 ORDER BY a;
+
 --connection server_1
 DROP TABLE t1;
 

sql/log.cc

@@ -8225,6 +8225,7 @@ int TC_LOG_BINLOG::open(const char *opt_name)
       sql_print_information("Recovering after a crash using %s", opt_name);
       error= recover(&log_info, log_name, &log,
                      (Format_description_log_event *)ev);
+      state_read= true;
       /* Pick the next unused seq_no from the recovered binlog state. */
       bump_seq_no_counter_if_needed(
                          rpl_global_gtid_binlog_state.seq_no_from_state());

sql/log.h

@@ -396,7 +396,7 @@ class MYSQL_QUERY_LOG: public MYSQL_LOG
   ( ((ulong)(c)>>1) == BINLOG_COOKIE_DUMMY_ID )
 
 class binlog_cache_mngr;
-class rpl_gtid;
+struct rpl_gtid;
 class MYSQL_BIN_LOG: public TC_LOG, private MYSQL_LOG
 {
  private: