Re: [PATCH] cleanup hashindex for pg_migrator hashindex compat mode (for 8.4)

Alvaro Herrera <alvherre@commandprompt.com> writes:
> Tom Lane escribi�:
>> IIRC it was demonstrated to be broken the last time it was proposed
>> as a solution to our problems.  Maybe it's been fixed since then, but
>> I don't have any confidence in it, since evidently it's not been stress
>> tested very hard.

> I think you're probably confusing it with interdiff.

No, because I never heard of interdiff before.  Checking the archives,
the discussion I was remembering was definitely about filterdiff, but
the rap on it was undocumented (so maybe "demonstrated" is too harsh):

http://archives.postgresql.org/pgsql-hackers/2007-10/msg01243.php
        regards, tom lane