MDEV-22125 : galera.galera_drop_multi MTR failed: InnoDB: MySQL is trying to drop database `fts`.`` though there are still open handles

MDEV-22140 galera.galera_drop_database MTR failed: InnoDB: MySQL is trying to drop database `fts`.`` though there are still open handles

Add wait conditions to wait that all operations are done in both
nodes.

mysql-test/suite/galera/r/galera_drop_database.result

@@ -13,9 +13,33 @@ INSERT INTO fts_t2 (f2) SELECT 'foobarbaz' FROM ten AS a1, ten AS a2, ten AS a3;
 DROP TABLE ten;
 UPDATE fts_t1 SET f2 = 'abcd';
 UPDATE fts_t2 SET f2 = 'efjh';
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t1;
+EXPECT_1000
+1000
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t2;
+EXPECT_1000
+1000
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t1 where f2 = 'abcd';
+EXPECT_1000
+1000
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t2 where f2 = 'efjh';
+EXPECT_1000
+1000
 connection node_2;
 connection node_1;
 connection node_2;
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t1;
+EXPECT_1000
+1000
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t2;
+EXPECT_1000
+1000
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t1 where f2 = 'abcd';
+EXPECT_1000
+1000
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t2 where f2 = 'efjh';
+EXPECT_1000
+1000
 connection node_1;
 USE fts;
 DROP TABLE fts_t1;
@@ -23,3 +47,4 @@ DROP TABLE fts_t2;
 SHOW TABLES;
 Tables_in_fts
 DROP DATABASE fts;
+connection node_2;

mysql-test/suite/galera/t/galera_drop_database.test

@@ -23,6 +23,10 @@ INSERT INTO fts_t2 (f2) SELECT 'foobarbaz' FROM ten AS a1, ten AS a2, ten AS a3;
 DROP TABLE ten;
 UPDATE fts_t1 SET f2 = 'abcd';
 UPDATE fts_t2 SET f2 = 'efjh';
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t1;
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t2;
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t1 where f2 = 'abcd';
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t2 where f2 = 'efjh';
 
 # Restart the second node:
 --connection node_2
@@ -34,6 +38,14 @@ UPDATE fts_t2 SET f2 = 'efjh';
 
 --connection node_2
 --source include/wait_until_ready.inc
+--let $wait_condition = SELECT COUNT(*) = 1000 FROM fts_t1 where f2 = 'abcd';
+--source include/wait_condition.inc
+--let $wait_condition = SELECT COUNT(*) = 1000 FROM fts_t2 where f2 = 'efjh';
+--source include/wait_condition.inc
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t1;
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t2;
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t1 where f2 = 'abcd';
+SELECT COUNT(*) AS EXPECT_1000 FROM fts_t2 where f2 = 'efjh';
 
 # Drop the tables and database after nodes restarted:
 --connection node_1
@@ -43,5 +55,13 @@ DROP TABLE fts_t2;
 SHOW TABLES;
 DROP DATABASE fts;
 
+--connection node_2
+--let $wait_condition = SELECT COUNT(*) = 0 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'fts_t1';
+--source include/wait_condition.inc
+--let $wait_condition = SELECT COUNT(*) = 0 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'fts_t2';
+--source include/wait_condition.inc
+--let $wait_condition = SELECT COUNT(*) = 0 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'fts';
+--source include/wait_condition.inc
+
 # Restore original auto_increment_offset values.
 --source include/auto_increment_offset_restore.inc