Details
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Bug
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Status: Open (View Workflow)
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Major
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Resolution: Unresolved
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10.6.7
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None
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None
Description
Dropping multiple tables that have foreign key constraints due to which one or some of the tables cannot be dropped and repeating dropping the same tables again will lead to a replication failure. On both primary and replica all tables will be dropped, but the replication stops with an error.
How to reproduce:
mysql (foobar)> create table a (id int primary key);
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Query OK, 0 rows affected (0.013 sec)
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mysql (foobar)> create table b (id int primary key, ref int, constraint `tablea` foreign key (ref) references a (id));
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Query OK, 0 rows affected (0.011 sec)
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mysql (foobar)> insert into a values (2);
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Query OK, 1 row affected (0.003 sec)
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mysql (foobar)> insert into b values (1, 2);
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Query OK, 1 row affected (0.003 sec)
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mysql (foobar)> drop table a, b;
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ERROR 1451 (23000): Cannot delete or update a parent row: a foreign key constraint fails
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mysql (foobar)> show tables;
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+------------------+
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| Tables_in_foobar |
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+------------------+
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| a |
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+------------------+
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1 row in set (0.002 sec)
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mysql (foobar)> drop table a, b;
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ERROR 1051 (42S02): Unknown table 'foobar.b'
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mysql (foobar)> show tables;
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Empty set (0.000 sec)
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The second drop table command causes the replication to stop.
Cheers
Volker