Re: First draft of back-branch release notes is done

Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)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