Ooh good spot. Yes I would be in favour of adding these, but as you say we need to thing about how we might migrate old data.
Doing this at 2.0.0 and providing a cleanup script (or doing it as part of the migration?) is probably the way to go. -ash- > On 17 Sep 2018, at 19:56, Stefan Seelmann <m...@stefan-seelmann.de> wrote: > > Hi, > > looking into the DB schema there is almost no referral integrity > enforced at the database level. Many foreign key constraints between > dag, dag_run, task_instance, xcom, dag_pickle, log, etc would make sense > IMO. > > Is there a particular reason why that's not implemented? > > Introducing it now will be hard, probably any real-world setup has some > violations. But I'm still in favor of this additional safety net. > > Kind Regards, > Stefan
