MDEV-4851: (tests) log tables modifiable on log_output!=TABLE

Test we can ALTER log tables directly when not being written
to.

This removes the contraint in the rpl_mysql_upgrade.test such
that we can run mysql_upgrade --write-binlog all the way
through to a replica. We test this in the replication scenario
where the mysql.{slow,general}_log tables aren't being
written to.

Reviewers: Vicențiu Ciorbaru, Anel Husakovic

mysql-test/r/log_tables.result

@@ -377,6 +377,14 @@ slow_log
 slow_log_new
 drop table slow_log_new, general_log_new;
 use test;
+SET GLOBAL LOG_OUTPUT = 'FILE';
+SET GLOBAL slow_query_log = 1;
+SET GLOBAL general_log = 1;
+ALTER TABLE mysql.slow_log ADD COLUMN comment_text TEXT NOT NULL;
+ALTER TABLE mysql.general_log ADD COLUMN comment_text TEXT NOT NULL;
+SET GLOBAL LOG_OUTPUT = 'NONE';
+ALTER TABLE mysql.slow_log DROP COLUMN comment_text;
+ALTER TABLE mysql.general_log DROP COLUMN comment_text;
 SET GLOBAL LOG_OUTPUT = 'TABLE';
 SET GLOBAL general_log = 0;
 FLUSH LOGS;

mysql-test/suite/rpl/r/rpl_mysql_upgrade.result

@@ -2,12 +2,54 @@ include/master-slave.inc
 [connection master]
 call mtr.add_suppression("Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT");
 call mtr.add_suppression("table or database name 'mysqltest-1'");
-DROP DATABASE IF EXISTS `#mysql50#mysqltest-1`;
-CREATE DATABASE `#mysql50#mysqltest-1`;
+CREATE DATABASE `mysqltest-1`;
 Master position is not changed
-STOP SLAVE SQL_THREAD;
-include/wait_for_slave_sql_to_stop.inc
-Master position has been changed
+SET @old_general_log_state = @@global.general_log;
+SET @old_slow_log_state = @@global.slow_query_log;
+SET @old_log_output = @@global.log_output;
+SET GLOBAL general_log = 'ON';
+SET GLOBAL slow_query_log = 'ON';
+SET GLOBAL log_output = 'FILE';
+ALTER TABLE mysql.slow_log DROP COLUMN thread_id, DROP COLUMN rows_affected;
 DROP DATABASE `mysqltest-1`;
-DROP DATABASE `#mysql50#mysqltest-1`;
+SHOW CREATE TABLE mysql.slow_log;
+Table	Create Table
+slow_log	CREATE TABLE `slow_log` (
+  `start_time` timestamp(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6) ON UPDATE CURRENT_TIMESTAMP(6),
+  `user_host` mediumtext NOT NULL,
+  `query_time` time(6) NOT NULL,
+  `lock_time` time(6) NOT NULL,
+  `rows_sent` int(11) NOT NULL,
+  `rows_examined` int(11) NOT NULL,
+  `db` varchar(512) NOT NULL,
+  `last_insert_id` int(11) NOT NULL,
+  `insert_id` int(11) NOT NULL,
+  `server_id` int(10) unsigned NOT NULL,
+  `sql_text` mediumtext NOT NULL
+) ENGINE=CSV DEFAULT CHARSET=utf8 COMMENT='Slow log'
+Master position has been changed
+SHOW CREATE TABLE mysql.slow_log;
+Table	Create Table
+slow_log	CREATE TABLE `slow_log` (
+  `start_time` timestamp(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6) ON UPDATE CURRENT_TIMESTAMP(6),
+  `user_host` mediumtext NOT NULL,
+  `query_time` time(6) NOT NULL,
+  `lock_time` time(6) NOT NULL,
+  `rows_sent` int(11) NOT NULL,
+  `rows_examined` int(11) NOT NULL,
+  `db` varchar(512) NOT NULL,
+  `last_insert_id` int(11) NOT NULL,
+  `insert_id` int(11) NOT NULL,
+  `server_id` int(10) unsigned NOT NULL,
+  `sql_text` mediumtext NOT NULL,
+  `thread_id` bigint(21) unsigned NOT NULL,
+  `rows_affected` int(11) NOT NULL
+) ENGINE=CSV DEFAULT CHARSET=utf8 COMMENT='Slow log'
+SET GLOBAL general_log = 'OFF';
+SET GLOBAL slow_query_log = 'OFF';
+truncate mysql.slow_log;
+truncate mysql.general_log;
+SET GLOBAL general_log = @old_general_log_state;
+SET GLOBAL slow_query_log = @old_slow_log_state;
+SET GLOBAL log_output = @old_log_output;
 include/rpl_end.inc

mysql-test/suite/rpl/t/rpl_mysql_upgrade.test

@@ -14,8 +14,7 @@ call mtr.add_suppression("table or database name 'mysqltest-1'");
 
 connection master;
 --disable_warnings
-DROP DATABASE IF EXISTS `#mysql50#mysqltest-1`;
-CREATE DATABASE `#mysql50#mysqltest-1`;
+CREATE DATABASE `mysqltest-1`;
 --enable_warnings
 sync_slave_with_master;
 
@@ -34,13 +33,25 @@ if ($before_position == $after_position)
   echo Master position is not changed;
 }
 
-#Some log events of the mysql_upgrade's will cause errors on slave.
+# Some log events of the mysql_upgrade previously caused errors on slave,
+# however with MDEV-4851 this should be ok, so we test it:
 connection slave;
-STOP SLAVE SQL_THREAD;
-source include/wait_for_slave_sql_to_stop.inc;
+SET @old_general_log_state = @@global.general_log;
+SET @old_slow_log_state = @@global.slow_query_log;
+SET @old_log_output = @@global.log_output;
+SET GLOBAL general_log = 'ON';
+SET GLOBAL slow_query_log = 'ON';
+SET GLOBAL log_output = 'FILE';
 
 connection master;
 #With '--force' option, mysql_upgrade always executes all sql statements for upgrading.
+ALTER TABLE mysql.slow_log DROP COLUMN thread_id, DROP COLUMN rows_affected;
+DROP DATABASE `mysqltest-1`;
+sync_slave_with_master;
+
+connection slave;
+SHOW CREATE TABLE mysql.slow_log;
+connection master;
 --exec $MYSQL_UPGRADE --skip-verbose --write-binlog --force --user=root > $MYSQLTEST_VARDIR/log/mysql_upgrade.log 2>&1
 
 let $datadir= `select @@datadir`;
@@ -55,8 +66,15 @@ if ($before_position != $after_position)
   echo Master position has been changed;
 }
 
-DROP DATABASE `mysqltest-1`;
+sync_slave_with_master;
 connection slave;
-DROP DATABASE `#mysql50#mysqltest-1`;
---let $rpl_only_running_threads= 1
+SHOW CREATE TABLE mysql.slow_log;
+SET GLOBAL general_log = 'OFF';
+SET GLOBAL slow_query_log = 'OFF';
+truncate mysql.slow_log;
+truncate mysql.general_log;
+SET GLOBAL general_log = @old_general_log_state;
+SET GLOBAL slow_query_log = @old_slow_log_state;
+SET GLOBAL log_output = @old_log_output;
+
 --source include/rpl_end.inc

mysql-test/t/log_tables.test

@@ -58,7 +58,7 @@ select * from general_log where argument like '%general_log%';
 
 #
 # Check some basic queries interfering with the log tables.
-# In our test we'll use a tbale with verbose comments to the short
+# In our test we'll use a table with verbose comments to the short
 # command type names, used in the tables
 #
 
@@ -470,6 +470,24 @@ show tables like "%log%";
 drop table slow_log_new, general_log_new;
 use test;
 
+#
+# Bug#69953 / MDEV-4851
+# Log tables should be modifable on LOG_OUTPUT != TABLE
+#
+#
+
+SET GLOBAL LOG_OUTPUT = 'FILE';
+SET GLOBAL slow_query_log = 1;
+SET GLOBAL general_log = 1;
+
+ALTER TABLE mysql.slow_log ADD COLUMN comment_text TEXT NOT NULL;
+ALTER TABLE mysql.general_log ADD COLUMN comment_text TEXT NOT NULL;
+
+SET GLOBAL LOG_OUTPUT = 'NONE';
+ALTER TABLE mysql.slow_log DROP COLUMN comment_text;
+ALTER TABLE mysql.general_log DROP COLUMN comment_text;
+
+
 #
 # Bug#27857 (Log tables supplies the wrong value for generating
 #            AUTO_INCREMENT numbers)