There's 11 functions which are marked immutable, but are marked as
parallel unsafe.

postgres=# select proname from pg_proc where provolatile = 'i' and
proparallel = 'u';
(11 rows)

I'm finding hard to imagine a reason why these might be unsafe, but
failed. I do notice they're all only used in information_schema.

Could it just perhaps be that these just missed the verification
process the other functions went through to determine their parallel

 David Rowley         
 PostgreSQL Development, 24x7 Support, Training & Services

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