Merge branch 'bb-10.2-release' into bb-10.3-release

Author: vuvova

mysql-test/suite/galera/disabled.def

@@ -30,3 +30,5 @@ partition : MDEV-19958 Galera test failure on galera.partition
 query_cache: MDEV-15805 Test failure on galera.query_cache
 sql_log_bin : MDEV-21491 galera.sql_log_bin
 versioning_trx_id: MDEV-18590: galera.versioning_trx_id: Test failure: mysqltest: Result content mismatch
+galera_wsrep_provider_unset_set: wsrep_provider is read-only for security reasons
+pxc-421: wsrep_provider is read-only for security reasons

mysql-test/suite/galera/include/galera_load_provider.inc

@@ -1,7 +1,6 @@
 --echo Loading wsrep provider ...
 
 --disable_query_log
---eval SET GLOBAL wsrep_provider = '$wsrep_provider_orig';
 --eval SET GLOBAL wsrep_cluster_address = '$wsrep_cluster_address_orig';
 --enable_query_log
 

mysql-test/suite/galera/include/galera_unload_provider.inc

@@ -1,7 +1,6 @@
 --echo Unloading wsrep provider ...
 
 --let $wsrep_cluster_address_orig = `SELECT @@wsrep_cluster_address`
---let $wsrep_provider_orig = `SELECT @@wsrep_provider`
 --let $wsrep_provider_options_orig = `SELECT @@wsrep_provider_options`
 
-SET GLOBAL wsrep_provider = 'none';
+SET GLOBAL wsrep_cluster_address = '';

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

@@ -21,7 +21,7 @@ INSERT INTO t1 VALUES ('node2_committed_before');
 INSERT INTO t1 VALUES ('node2_committed_before');
 COMMIT;
 Unloading wsrep provider ...
-SET GLOBAL wsrep_provider = 'none';
+SET GLOBAL wsrep_cluster_address = '';
 connection node_1;
 SET AUTOCOMMIT=OFF;
 START TRANSACTION;

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

@@ -30,7 +30,7 @@ INSERT INTO t1 VALUES ('node2_committed_before');
 INSERT INTO t1 VALUES ('node2_committed_before');
 COMMIT;
 Unloading wsrep provider ...
-SET GLOBAL wsrep_provider = 'none';
+SET GLOBAL wsrep_cluster_address = '';
 connection node_1;
 SET AUTOCOMMIT=OFF;
 START TRANSACTION;

mysql-test/suite/galera/r/mysql-wsrep#33.result

@@ -30,7 +30,7 @@ INSERT INTO t1 VALUES ('node2_committed_before');
 INSERT INTO t1 VALUES ('node2_committed_before');
 COMMIT;
 Unloading wsrep provider ...
-SET GLOBAL wsrep_provider = 'none';
+SET GLOBAL wsrep_cluster_address = '';
 connection node_1;
 SET AUTOCOMMIT=OFF;
 START TRANSACTION;

mysql-test/suite/sys_vars/r/sysvars_wsrep.result

@@ -349,7 +349,7 @@ NUMERIC_MIN_VALUE	NULL
 NUMERIC_MAX_VALUE	NULL
 NUMERIC_BLOCK_SIZE	NULL
 ENUM_VALUE_LIST	NULL
-READ_ONLYNO
+READ_ONLYYES
 COMMAND_LINE_ARGUMENT	REQUIRED
 VARIABLE_NAME	WSREP_ON
 SESSION_VALUE	OFF
@@ -405,7 +405,7 @@ NUMERIC_MIN_VALUE	NULL
 NUMERIC_MAX_VALUE	NULL
 NUMERIC_BLOCK_SIZE	NULL
 ENUM_VALUE_LIST	NULL
-READ_ONLYNO
+READ_ONLYYES
 COMMAND_LINE_ARGUMENT	REQUIRED
 VARIABLE_NAME	WSREP_PROVIDER_OPTIONS
 SESSION_VALUE	NULL