#
# WL#12731: Improve database synchronization during mysqld startup
#
# Setup - create few databases and tables so that the alter and drop statements can be tested.
create database alter_db1 charset utf8mb4;
create table alter_db1.t1 (a int);
create database drop_db1;
create database drop_db2;
create table drop_db2.t1(a int) engine ndb;
create database drop_db3;
create table drop_db3.t1(a int);
create database restore_db1;
create table restore_db1.t1(a int) engine ndb;
create database restore_db2 charset latin1;
create table restore_db2.t1(a int) engine ndb;
create database restore_db3 charset latin1;
create table restore_db3.t1(a int) engine ndb;
# Take a backup of the current setup
# Drop restore_db1,restore_db2 to check how the server startup handles database restores
drop database restore_db1;
drop database restore_db2;
#
# Shutdown Server1
#
#
# Run DDLs on Server2 when server1 is down
#
# Create a database
create database create_db;
# Add tables to it
create table create_db.t1(a int) engine ndb;
create table create_db.t2(a int);
# Alter already existing databases
alter database alter_db1 charset latin1;
# Create and alter a database
create database alter_db2 charset utf8mb4;
alter database alter_db2 charset latin1;
# Drop databases
drop database drop_db1;
drop database drop_db2;
drop database drop_db3;
# Drop database restore_db3 and then restore restore_db1, restore_db2, restore_db3
drop database restore_db3;
#
# Startup server1
#
#
# Now check that the databases are in expected states
#
# Verify that create_db has been discovered
show create database create_db;
Database	Create Database
create_db	CREATE DATABASE `create_db` /*!40100 DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci */ /*!80016 DEFAULT ENCRYPTION='N' */
# Verify t1 has been created. t2 won't be as it is local to Server 2.
show tables from create_db;
Tables_in_create_db
t1
show create table create_db.t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) DEFAULT NULL
) ENGINE=ndbcluster DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
show create table create_db.t2;
ERROR 42S02: Table 'create_db.t2' doesn't exist
# Verify that the database alter_db1 were properly altered
show create database alter_db1;
Database	Create Database
alter_db1	CREATE DATABASE `alter_db1` /*!40100 DEFAULT CHARACTER SET latin1 */ /*!80016 DEFAULT ENCRYPTION='N' */
# Check that alter_db2 is created and altered
show create database alter_db2;
Database	Create Database
alter_db2	CREATE DATABASE `alter_db2` /*!40100 DEFAULT CHARACTER SET latin1 */ /*!80016 DEFAULT ENCRYPTION='N' */
# Check the states of databases that were dropped
# Databases drop_db1 and drop_db2 should be dropped.
show create database drop_db1;
ERROR 42000: Unknown database 'drop_db1'
show create database drop_db2;
ERROR 42000: Unknown database 'drop_db2'
# Database drop_db3 should be preserved.
show create database drop_db3;
Database	Create Database
drop_db3	CREATE DATABASE `drop_db3` /*!40100 DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci */ /*!80016 DEFAULT ENCRYPTION='N' */
# Check that the databases and tables that were
# dropped and restored are now discovered
show create database restore_db1;
Database	Create Database
restore_db1	CREATE DATABASE `restore_db1` /*!40100 DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci */ /*!80016 DEFAULT ENCRYPTION='N' */
show create table restore_db1.t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) DEFAULT NULL
) ENGINE=ndbcluster DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
# restore_db2 was dropped when both mysqlds were alive
# so it would have been discovered with default charset
show create database restore_db2;
Database	Create Database
restore_db2	CREATE DATABASE `restore_db2` /*!40100 DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci */ /*!80016 DEFAULT ENCRYPTION='N' */
show create table restore_db2.t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) DEFAULT NULL
) ENGINE=ndbcluster DEFAULT CHARSET=latin1
# restore_db3 was dropped when server1 was down
# when server1 came up, it should have been
# preserved the database with previous setting
show create database restore_db3;
Database	Create Database
restore_db3	CREATE DATABASE `restore_db3` /*!40100 DEFAULT CHARACTER SET latin1 */ /*!80016 DEFAULT ENCRYPTION='N' */
show create table restore_db3.t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) DEFAULT NULL
) ENGINE=ndbcluster DEFAULT CHARSET=latin1
#
# Cleanup
#
drop table create_db.t2;
drop table drop_db3.t1;
drop database create_db;
drop database alter_db1;
drop database alter_db2;
drop database drop_db3;
drop database restore_db1;
drop database restore_db2;
drop database restore_db3;