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Bug #18412598 UNCLEAN SYSTEM SHUTDOWN RECOVERY FAILS FOR SCHEMA WITH CAPITAL LETTERS create database MYDB; USE MYDB; CREATE TABLE mytable (id int primary key) ENGINE=innodb; CREATE TABLE FOO (id int,constraint FOREIGN KEY (id) REFERENCES mytable(id) ON DELETE CASCADE) ENGINE=innodb; CREATE TABLE mytable_ref (id int,constraint FOREIGN KEY (id) REFERENCES FOO(id) ON DELETE CASCADE) ENGINE=innodb; INSERT INTO mytable VALUES (10),(20),(30),(40); INSERT INTO FOO VALUES (20),(10); INSERT INTO mytable_ref VALUES (20),(10); SHOW VARIABLES LIKE 'innodb_fast_shutdown'; Variable_name Value innodb_fast_shutdown 2 START TRANSACTION; INSERT INTO mytable VALUES (50); INSERT INTO FOO VALUES (50); INSERT INTO mytable_ref VALUES (50); # Restart the server. This will go into crash recovery mode USE MYDB; SELECT * FROM mytable; id 10 20 30 40 SELECT * FROM FOO; id 10 20 SELECT * FROM mytable_ref; id 10 20 DELETE FROM mytable WHERE id =10; SELECT * FROM FOO; id 20 SELECT * FROM mytable_ref; id 20 CREATE TABLE MYtable (id int) ENGINE=innodb; ERROR 42S01: Table 'mytable' already exists CREATE TABLE Foo (id int) ENGINE=innodb; ERROR 42S01: Table 'foo' already exists DROP TABLE mytable_ref,FOO; DROP TABLE mytable; use test; DROP DATABASE MYDB;