Andrew Sullivan wrote:

Probably the most severe objection to doing things this way is that the
selected plan could change unexpectedly as a result of the physical
table size changing. Right now the DBA can keep tight rein on actions
that might affect plan selection (ie, VACUUM and ANALYZE), but that
would go by the board with this. OTOH, we seem to be moving towards
autovacuum, which also takes away any guarantees in this department.

But aren't we requiring that we can disable autovacuum on some

Yes that is the long term goal, but the autovac in 8.0 is still all or nothing.

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