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MDEV-10047: table-based master info repository

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Problem:
=======
When we upgrade from "mysql" to "mariadb" if slave is using repositories as
tables their data is completely ignored and no warning is issued in error log.

Fix:
===
"mysql_upgrade" test should check for the presence of data in
"mysql.slave_master_info" and "mysql.slave_relay_log_info" tables. When tables
have some data the upgrade script should report a warning which hints users
that the data in repository tables will be ignored.
This commit is contained in:
Sujatha
2020-03-10 15:54:55 +05:30
parent b753ac066b
commit 9ae015878f
3 changed files with 220 additions and 1 deletions
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33
mysql-test/main/rpl_mysql_upgrade_slave_repo_check.result Normal file
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include/master-slave.inc
[connection master]
********************************************************************
* Test case1: Upgrade when repository tables have data. *
* mysql_upgrade script should report warnings. *
********************************************************************
connection master;
Slave info repository compatibility check: Found data in `mysql`.`slave_master_info` table.
Warning: Content of `mysql`.`slave_master_info` table will be ignored as MariaDB supports file based info repository.
Slave info repository compatibility check: Found data in `mysql`.`slave_relay_log_info` table.
Warning: Content of `mysql`.`slave_relay_log_info` table will be ignored as MariaDB supports file based repository.
Slave server may not possess the correct replication metadata.
Execution of CHANGE MASTER as per `mysql`.`slave_master_info` and `mysql`.`slave_relay_log_info` table content is recommended.
connection slave;
Slave info repository compatibility check: Found data in `mysql`.`slave_master_info` table.
Warning: Content of `mysql`.`slave_master_info` table will be ignored as MariaDB supports file based info repository.
Slave info repository compatibility check: Found data in `mysql`.`slave_relay_log_info` table.
Warning: Content of `mysql`.`slave_relay_log_info` table will be ignored as MariaDB supports file based repository.
Slave server may not possess the correct replication metadata.
Execution of CHANGE MASTER as per `mysql`.`slave_master_info` and `mysql`.`slave_relay_log_info` table content is recommended.
connection master;
TRUNCATE TABLE `mysql`.`slave_master_info`;
TRUNCATE TABLE `mysql`.`slave_relay_log_info`;
********************************************************************
* Test case2: Upgrade when repository tables are empty. *
* mysql_upgrade script should not report any warning. *
********************************************************************
connection master;
connection slave;
"====== Clean up ======"
connection master;
DROP TABLE `mysql`.`slave_master_info`, `mysql`.`slave_relay_log_info`;
include/rpl_end.inc