> On Aug 26, 2021, at 2:38 PM, Peter Geoghegan <p...@bowt.ie> wrote:
>
> It looks like we neglect to call CHECK_FOR_INTERRUPTS() anywhere
> inside verify_heapam.c. Is there any reason for this?
Not any good one that I can see.
> Can't we just
> put a CHECK_FOR_INTERRUPTS() at the top of the outermost loop, inside
> verify_heapam()?
I expect we could.
> Not sure if pg_amcheck itself is a factor here too -- didn't get that far.
That runs an event loop in the client over multiple checks (heap and/or btree)
running in backends, just as reindexdb and vacuumdb do over parallel reindexes
and vacuums running in backends. It should be just as safe to ctrl-c out of
pg_amcheck as out of those two. They all three use fe_utils/cancel.h's
setup_cancel_handler(), so I would expect modifying verify_heapam would be
enough.
—
Mark Dilger
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