Andres Freund <> writes:
> On 2014-07-11 11:07:21 -0400, Tom Lane wrote:
>> Hacking pg_index.indisvalid could work, given a reasonably recent PG.
>> I would not try it in production until I'd tested it ;-)

> Works, but IIRC can cause problems at least < 9.4 because concurrent
> cache builds might miss the pg_index row...

If you're talking about SnapshotNow hazards, I think the risk would be
minimal, and probably no worse than cases that the system will cause
by itself.

                        regards, tom lane

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