MDEV-19514 preparation: Extend innodb.innodb-change-buffer-recovery

Test innodb_read_only startup (which will be refused after a crash),
and test also innodb_force_recovery=5, and extract some change buffer
merge statistics. Omit any statistics about delete (purge) buffering,
because purge could happen at any time.

Use the sequence storage engine for populating the table.

mysql-test/suite/innodb/r/innodb-change-buffer-recovery.result

@@ -2,27 +2,18 @@
 # Bug#69122 - INNODB DOESN'T REDO-LOG INSERT BUFFER MERGE
 #             OPERATION IF IT IS DONE IN-PLACE
 #
+call mtr.add_suppression("InnoDB: innodb_read_only prevents crash recovery");
+call mtr.add_suppression("Plugin initialization aborted at srv0start\\.cc");
+call mtr.add_suppression("Plugin 'InnoDB'");
+FLUSH TABLES;
 CREATE TABLE t1(
 a INT AUTO_INCREMENT PRIMARY KEY,
 b CHAR(1),
 c INT,
 INDEX(b))
 ENGINE=InnoDB STATS_PERSISTENT=0;
 SET GLOBAL innodb_change_buffering_debug = 1;
-INSERT INTO t1 VALUES(0,'x',1);
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
+INSERT INTO t1 SELECT 0,'x',1 FROM seq_1_to_8192;
 BEGIN;
 SELECT b FROM t1 LIMIT 3;
 b
@@ -38,8 +29,23 @@ SELECT b FROM t1 LIMIT 3;
 ERROR HY000: Lost connection to MySQL server during query
 disconnect con1;
 connection default;
-FOUND 1 /Wrote log record for ibuf update in place operation/ in my_restart.err
+FOUND 1 /Wrote log record for ibuf update in place operation/ in mysqld.1.err
+CHECK TABLE t1;
+Table	Op	Msg_type	Msg_text
+test.t1	check	Error	Unknown storage engine 'InnoDB'
+test.t1	check	error	Corrupt
+FOUND 1 /innodb_read_only prevents crash recovery/ in mysqld.1.err
+SELECT * FROM t1 LIMIT 1;
+a	b	c
+1	X	1
+SHOW ENGINE INNODB STATUS;
+Type	Name	Status
+InnoDB		insert 0, delete mark 0
+SET GLOBAL innodb_fast_shutdown=0;
 CHECK TABLE t1;
 Table	Op	Msg_type	Msg_text
 test.t1	check	status	OK
+SHOW ENGINE INNODB STATUS;
+Type	Name	Status
+InnoDB		insert 79, delete mark 1
 DROP TABLE t1;

mysql-test/suite/innodb/t/innodb-change-buffer-recovery-master.opt

@@ -1,2 +1 @@
---log-error=$MYSQLTEST_VARDIR/tmp/my_restart.err
 --innodb_buffer_pool_size=24M

mysql-test/suite/innodb/t/innodb-change-buffer-recovery.test

@@ -11,6 +11,12 @@
 --source include/not_valgrind.inc
 # This test is slow on buildbot.
 --source include/big_test.inc
+--source include/have_sequence.inc
+
+call mtr.add_suppression("InnoDB: innodb_read_only prevents crash recovery");
+call mtr.add_suppression("Plugin initialization aborted at srv0start\\.cc");
+call mtr.add_suppression("Plugin 'InnoDB'");
+FLUSH TABLES;
 
 CREATE TABLE t1(
 	a INT AUTO_INCREMENT PRIMARY KEY,
@@ -27,25 +33,12 @@ ENGINE=InnoDB STATS_PERSISTENT=0;
 # change buffering is possible, so that the change buffer will be used
 # whenever possible.
 SET GLOBAL innodb_change_buffering_debug = 1;
-let SEARCH_FILE = $MYSQLTEST_VARDIR/tmp/my_restart.err;
+let SEARCH_FILE = $MYSQLTEST_VARDIR/log/mysqld.1.err;
 
 # Create enough rows for the table, so that the change buffer will be
 # used for modifying the secondary index page. There must be multiple
 # index pages, because changes to the root page are never buffered.
-INSERT INTO t1 VALUES(0,'x',1);
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
-INSERT INTO t1 SELECT 0,b,c FROM t1;
+INSERT INTO t1 SELECT 0,'x',1 FROM seq_1_to_8192;
 
 BEGIN;
 SELECT b FROM t1 LIMIT 3;
@@ -63,10 +56,26 @@ SET DEBUG_DBUG='+d,crash_after_log_ibuf_upd_inplace';
 SELECT b FROM t1 LIMIT 3;
 disconnect con1;
 connection default;
-
 let SEARCH_PATTERN=Wrote log record for ibuf update in place operation;
 --source include/search_pattern_in_file.inc
+
+--let $restart_parameters= --innodb-read-only
 --source include/start_mysqld.inc
+CHECK TABLE t1;
+--source include/shutdown_mysqld.inc
+let SEARCH_PATTERN=innodb_read_only prevents crash recovery;
+--source include/search_pattern_in_file.inc
 
+--let $restart_parameters= --innodb-force-recovery=5
+--source include/start_mysqld.inc
+SELECT * FROM t1 LIMIT 1;
+replace_regex /.*operations:.* (insert.*), delete \d.*discarded .*/\1/;
+SHOW ENGINE INNODB STATUS;
+# Slow shutdown will not merge the changes due to innodb_force_recovery=5.
+SET GLOBAL innodb_fast_shutdown=0;
+--let $restart_parameters=
+--source include/restart_mysqld.inc
 CHECK TABLE t1;
+replace_regex /.*operations:.* (insert.*), delete \d.*discarded .*/\1/;
+SHOW ENGINE INNODB STATUS;
 DROP TABLE t1;