Alvaro Herrera <alvherre@alvh.no-ip.org> writes:
> On 2023-Feb-03, Tom Lane wrote:
>> Fix edge-case data corruption in shared tuplestores (Dmitry Astapov)
> I think this sounds really scary, because people are going to think that
> their stored data can get corrupted -- they don't necessarily know what
> a "shared tuplestore" is. Maybe "Avoid query failures in parallel hash
> joins" as headline?
Hmmm ... are we sure it *can't* lead to corruption of stored data,
if this happens during an INSERT or UPDATE plan? I'll grant that
such a case seems pretty unlikely though, as the bogus data
retrieved from the tuplestore would have to not cause a failure
within the query before it can get written out.
Also, aren't shared tuplestores used in more places than just
parallel hash join? I mentioned that as an example, not an
exhaustive list of trouble spots.
regards, tom lane
