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#
# Bug #20476395 DICT_LOAD_FOREIGNS() FAILED IN
# COMMIT_INPLACE_ALTER_TABLE
#
call mtr.add_suppression("InnoDB: Failed to load table");
CREATE DATABASE Bug;
CREATE TABLE Bug.parent(a SERIAL) ENGINE=INNODB;
CREATE TABLE Bug.child(a SERIAL, FOREIGN KEY f(a) REFERENCES Bug.parent(a))
ENGINE=INNODB;
create database bug;
use bug;
create table parent(a serial) engine=innodb;
create table child(a serial, foreign key fk (a) references parent(a))engine=innodb;
insert into parent values(1);
insert into child values(1);
drop database Bug;
connect con1,localhost,root,,bug;
SET DEBUG_SYNC='innodb_rename_table_ready SIGNAL s1 WAIT_FOR s2 EXECUTE 2';
ALTER TABLE child ROW_FORMAT=DYNAMIC, ALGORITHM=COPY;
connection default;
SET DEBUG_SYNC='now WAIT_FOR s1';
SET DEBUG_SYNC='now SIGNAL s2 WAIT_FOR s1';
# restart
disconnect con1;
show tables;
Tables_in_bug
child
parent
alter table parent row_format=dynamic;
select * from child;
a
1
drop table parent;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails
drop table child;
drop table parent;
drop database bug;
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