PS-9306: MySQL 8.0.38, 8.4.1 and 9.0.0 crashes on restart if database…

… has 10K tables or more

https://perconadev.atlassian.net/browse/PS-9306

Upstream fixed the problem in 8.0.39 release but no testcase is attached
to the bug fix.

This commit introduces a mtr testcase. It creates 8192 tables,
restarts the server and it should come up

mysql-test/suite/innodb/r/percona_create_table_8k.result

@@ -0,0 +1,50 @@
+#
+# PS-9306 : MySQL 8.0.38, 8.4.1 and 9.0.0 crashes on restart if database has 10K tables or more
+#
+CREATE DATABASE test_8k;
+CREATE PROCEDURE create_tables(start_index INT, end_index INT)
+BEGIN
+DECLARE i INT;
+SET i = start_index;
+WHILE i < end_index DO
+SET @table_name = CONCAT('table_', i);
+SET @create_stmt = CONCAT('CREATE TABLE IF NOT EXISTS test_8k.', @table_name, ' (id INT PRIMARY KEY AUTO_INCREMENT, data VARCHAR(255));');
+PREPARE stmt FROM @create_stmt;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+SET i = i + 1;
+END WHILE;
+END|
+CALL create_tables(0*1024,(0+1)*1024);
+CALL create_tables(1*1024,(1+1)*1024);
+CALL create_tables(2*1024,(2+1)*1024);
+CALL create_tables(3*1024,(3+1)*1024);
+CALL create_tables(4*1024,(4+1)*1024);
+CALL create_tables(5*1024,(5+1)*1024);
+CALL create_tables(6*1024,(6+1)*1024);
+CALL create_tables(7*1024,(7+1)*1024);
+# restart
+CREATE PROCEDURE drop_tables(start_index INT, end_index INT)
+BEGIN
+DECLARE i INT;
+SET i = start_index;
+WHILE i < end_index DO
+SET @table_name = CONCAT('table_', i);
+SET @create_stmt = CONCAT('DROP TABLE test_8k.', @table_name, ';');
+PREPARE stmt FROM @create_stmt;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+SET i = i + 1;
+END WHILE;
+END|
+CALL drop_tables(0*1024,(0+1)*1024);
+CALL drop_tables(1*1024,(1+1)*1024);
+CALL drop_tables(2*1024,(2+1)*1024);
+CALL drop_tables(3*1024,(3+1)*1024);
+CALL drop_tables(4*1024,(4+1)*1024);
+CALL drop_tables(5*1024,(5+1)*1024);
+CALL drop_tables(6*1024,(6+1)*1024);
+CALL drop_tables(7*1024,(7+1)*1024);
+DROP DATABASE test_8k;
+DROP PROCEDURE create_tables;
+DROP PROCEDURE drop_tables;

mysql-test/suite/innodb/t/percona_create_table_8k.test

@@ -0,0 +1,89 @@
+--echo #
+--echo # PS-9306 : MySQL 8.0.38, 8.4.1 and 9.0.0 crashes on restart if database has 10K tables or more
+--echo #
+
+CREATE DATABASE test_8k;
+--source include/count_sessions.inc
+--source include/big_test.inc
+
+DELIMITER |;
+CREATE PROCEDURE create_tables(start_index INT, end_index INT)
+BEGIN
+    DECLARE i INT;
+    SET i = start_index;
+    WHILE i < end_index DO
+        SET @table_name = CONCAT('table_', i);
+        SET @create_stmt = CONCAT('CREATE TABLE IF NOT EXISTS test_8k.', @table_name, ' (id INT PRIMARY KEY AUTO_INCREMENT, data VARCHAR(255));');
+        PREPARE stmt FROM @create_stmt;
+        EXECUTE stmt;
+        DEALLOCATE PREPARE stmt;
+        SET i = i + 1;
+    END WHILE;
+END|
+DELIMITER ;|
+
+let $connections=8;
+let $i=0;
+while ($i < $connections) {
+  --connect(C$i,localhost,root,,test)
+  --send_eval CALL create_tables($i*1024,($i+1)*1024)
+  inc $i;
+}
+
+let $i=0;
+while ($i < $connections) {
+  --connection C$i
+  reap;
+  --disconnect C$i
+  --source include/wait_until_disconnected.inc
+  inc $i;
+}
+--connection default
+--source include/wait_until_count_sessions.inc
+
+--source include/restart_mysqld.inc
+
+--assert(`SELECT COUNT(*)=8192 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'test_8k'`)
+
+--source include/count_sessions.inc
+
+DELIMITER |;
+CREATE PROCEDURE drop_tables(start_index INT, end_index INT)
+BEGIN
+    DECLARE i INT;
+    SET i = start_index;
+    WHILE i < end_index DO
+        SET @table_name = CONCAT('table_', i);
+        SET @create_stmt = CONCAT('DROP TABLE test_8k.', @table_name, ';');
+        PREPARE stmt FROM @create_stmt;
+        EXECUTE stmt;
+        DEALLOCATE PREPARE stmt;
+        SET i = i + 1;
+    END WHILE;
+END|
+DELIMITER ;|
+
+let $connections=8;
+let $i=0;
+while ($i < $connections) {
+  --connect(C$i,localhost,root,,test)
+  --send_eval CALL drop_tables($i*1024,($i+1)*1024)
+  inc $i;
+}
+
+let $i=0;
+while ($i < $connections) {
+  --connection C$i
+  reap;
+  --disconnect C$i
+  --source include/wait_until_disconnected.inc
+  inc $i;
+}
+--connection default
+--source include/wait_until_count_sessions.inc
+
+--assert(`SELECT COUNT(*)=0 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'test_8k'`)
+
+DROP DATABASE test_8k;
+DROP PROCEDURE create_tables;
+DROP PROCEDURE drop_tables;