Last modified: 2010-07-30 19:58:10 UTC
Error: 1062 Duplicate entry 'mediawiki-bw_:translate-groups' for key 1 (localhost)
I guess this is because two threads were trying to update it at the same time. In my opinion it should not throw an exception in cases like this.
set() uses a delete() followed by an insert() ; it should use replace() instead.
Fixed in r70203