Re: can't cancel a query with pg_cancel_backend

Marc Cousin <mcousin@sigma.fr> writes:
> [ can't cancel this query ]

>  Index Scan using file_jpfid_idx on file  (cost=0.00..7327212.07 rows=2128
> width=104)
>    Index Cond: (pathid = 120)

>     "file_jpfid_idx" btree (jobid, pathid, filenameid)

Hmm ... is it likely that index entries with pathid = 120 are *very* few
and far between in jobid order?  It looks like we have no
CHECK_FOR_INTERRUPTS calls inside the loop in _bt_next(), which is
probably a mistake ...

            regards, tom lane