MDEV-21514 : Galera test failure on galera.galera_wan_restart_sst

Replace unnecessary sleeps with real wait_conditions to make
sure correct cluster sizes.

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

-SELECT VARIABLE_VALUE = 4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
-VARIABLE_VALUE = 4
-1
+SELECT VARIABLE_VALUE AS EXPECT_4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+EXPECT_4
+4
 connection node_1;
 CREATE TABLE t1 (f1 INTEGER);
 INSERT INTO t1 VALUES (1);
@@ -46,30 +46,30 @@ INSERT INTO t1 VALUES (33);
 connection node_4;
 INSERT INTO t1 VALUES (341);
 connection node_1;
-SELECT COUNT(*) = 19 FROM t1;
-COUNT(*) = 19
-1
+SELECT COUNT(*) AS EXPECT_19 FROM t1;
+EXPECT_19
+19
 connection node_2;
-SELECT VARIABLE_VALUE = 4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
-VARIABLE_VALUE = 4
-1
-SELECT COUNT(*) = 19 FROM t1;
-COUNT(*) = 19
-1
+SELECT VARIABLE_VALUE AS EXPECT_4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+EXPECT_4
+4
+SELECT COUNT(*) AS EXPECT_19 FROM t1;
+EXPECT_19
+19
 connection node_3;
-SELECT VARIABLE_VALUE = 4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
-VARIABLE_VALUE = 4
-1
-SELECT COUNT(*) = 19 FROM t1;
-COUNT(*) = 19
-1
+SELECT VARIABLE_VALUE AS EXPECT_4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+EXPECT_4
+4
+SELECT COUNT(*) AS EXPECT_19 FROM t1;
+EXPECT_19
+19
 connection node_4;
-SELECT VARIABLE_VALUE = 4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
-VARIABLE_VALUE = 4
-1
-SELECT COUNT(*) = 19 FROM t1;
-COUNT(*) = 19
-1
+SELECT VARIABLE_VALUE AS EXPECT_4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+EXPECT_4
+4
+SELECT COUNT(*) AS EXPECT_19 FROM t1;
+EXPECT_19
+19
 connection node_1;
 DROP TABLE t1;
 CALL mtr.add_suppression("There are no nodes in the same segment that will ever be able to become donors, yet there is a suitable donor outside");

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

@@ -10,9 +10,11 @@
 
 --source include/big_test.inc
 --source include/galera_cluster.inc
---source include/have_innodb.inc
+--source include/force_restart.inc
 
-SELECT VARIABLE_VALUE = 4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+--let $wait_condition = SELECT VARIABLE_VALUE = 4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+--source include/wait_condition.inc
+SELECT VARIABLE_VALUE AS EXPECT_4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
 
 --connection node_1
 CREATE TABLE t1 (f1 INTEGER);
@@ -37,10 +39,11 @@ INSERT INTO t1 VALUES (4);
 INSERT INTO t1 VALUES (13);
 
 --source include/kill_galera.inc
---sleep 5
 
 --connection node_1
 --source include/wait_until_connected_again.inc
+--let $wait_condition = SELECT VARIABLE_VALUE = 3 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+--source include/wait_condition.inc
 INSERT INTO t1 VALUES (11);
 
 --connection node_2
@@ -51,9 +54,11 @@ INSERT INTO t1 VALUES (14);
 
 --connection node_3
 --source include/start_mysqld.inc
---sleep 5
 --source include/wait_until_connected_again.inc
 
+--let $wait_condition = SELECT VARIABLE_VALUE = 4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+--source include/wait_condition.inc
+
 INSERT INTO t1 VALUES (131);
 
 #
@@ -64,10 +69,12 @@ INSERT INTO t1 VALUES (131);
 INSERT INTO t1 VALUES (22);
 
 --source include/kill_galera.inc
---sleep 5
 
 --connection node_1
 --source include/wait_until_connected_again.inc
+--let $wait_condition = SELECT VARIABLE_VALUE = 3 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+--source include/wait_condition.inc
+
 INSERT INTO t1 VALUES (21);
 
 --connection node_3
@@ -78,8 +85,9 @@ INSERT INTO t1 VALUES (24);
 
 --connection node_2
 --source include/start_mysqld.inc
---sleep 5
 --source include/wait_until_connected_again.inc
+--let $wait_condition = SELECT VARIABLE_VALUE = 4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+--source include/wait_condition.inc
 
 INSERT INTO t1 VALUES (221);
 
@@ -91,10 +99,11 @@ INSERT INTO t1 VALUES (221);
 INSERT INTO t1 VALUES (34);
 
 --source include/kill_galera.inc
---sleep 5
 
 --connection node_1
 --source include/wait_until_connected_again.inc
+--let $wait_condition = SELECT VARIABLE_VALUE = 3 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+--source include/wait_condition.inc
 INSERT INTO t1 VALUES (31);
 
 --connection node_2
@@ -105,8 +114,9 @@ INSERT INTO t1 VALUES (33);
 
 --connection node_4
 --source include/start_mysqld.inc
---sleep 5
 --source include/wait_until_connected_again.inc
+--let $wait_condition = SELECT VARIABLE_VALUE = 4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+--source include/wait_condition.inc
 
 INSERT INTO t1 VALUES (341);
 
@@ -119,19 +129,19 @@ INSERT INTO t1 VALUES (341);
 --let $wait_condition = SELECT VARIABLE_VALUE = 4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
 --source include/wait_condition.inc
 
-SELECT COUNT(*) = 19 FROM t1;
+SELECT COUNT(*) AS EXPECT_19 FROM t1;
 
 --connection node_2
-SELECT VARIABLE_VALUE = 4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
-SELECT COUNT(*) = 19 FROM t1;
+SELECT VARIABLE_VALUE AS EXPECT_4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+SELECT COUNT(*) AS EXPECT_19 FROM t1;
 
 --connection node_3
-SELECT VARIABLE_VALUE = 4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
-SELECT COUNT(*) = 19 FROM t1;
+SELECT VARIABLE_VALUE AS EXPECT_4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+SELECT COUNT(*) AS EXPECT_19 FROM t1;
 
 --connection node_4
-SELECT VARIABLE_VALUE = 4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
-SELECT COUNT(*) = 19 FROM t1;
+SELECT VARIABLE_VALUE AS EXPECT_4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
+SELECT COUNT(*) AS EXPECT_19 FROM t1;
 
 --connection node_1
 DROP TABLE t1;