Re: CREATE UNLOGGED TABLE seq faults when debug_discard_caches=1

2022-11-25 Thread Jakub Wartak
Hi hackers, Mr Lane, thank you for backporting this also to version 13. It seems to be occuring in the wild (without debug_discard_caches) for real user too when doing a lot of "CREATE INDEX i ON unlogged_table_truncated_after_crash (x,y)" which sometimes (rarely) results in SIGSEGV11. I've

Re: CREATE UNLOGGED TABLE seq faults when debug_discard_caches=1

2022-11-18 Thread Tomas Vondra
On 11/18/22 15:43, Tom Lane wrote: > David Geier writes: >> On a different note: are we frequently running our tests suites with >> debug_discard_caches=1 enabled? >> It doesn't seem like. > > Hmm. Buildfarm members avocet and trilobite are supposed to be > doing that, but their runtimes

Re: CREATE UNLOGGED TABLE seq faults when debug_discard_caches=1

2022-11-18 Thread Tom Lane
David Geier writes: > On a different note: are we frequently running our tests suites with > debug_discard_caches=1 enabled? > It doesn't seem like. Hmm. Buildfarm members avocet and trilobite are supposed to be doing that, but their runtimes of late put the lie to it. Configuration option

Re: CREATE UNLOGGED TABLE seq faults when debug_discard_caches=1

2022-11-18 Thread David Geier
Hi Tom, Back-patching but keeping RelationOpenSgmr() for extensions sounds reasonable. On a different note: are we frequently running our tests suites with debug_discard_caches=1 enabled? It doesn't seem like. I just ran make check with debug_discard_caches=1 on - latest master: everything

Re: CREATE UNLOGGED TABLE seq faults when debug_discard_caches=1

2022-11-17 Thread Tom Lane
I wrote: > I wonder whether we ought to back-patch f10f0ae42. We could > leave the RelationOpenSmgr macro in existence to avoid unnecessary > breakage of extension code, but stop using it within our own code. Concretely, about like this for v14 (didn't look at the older branches yet). I'm not

Re: CREATE UNLOGGED TABLE seq faults when debug_discard_caches=1

2022-11-17 Thread Tom Lane
Spyridon Dimitrios Agathos writes: > while testing the developer settings of PSQL (14.5) I came across this > issue: > postgres=# CREATE UNLOGGED TABLE stats ( > postgres(# pg_hash BIGINT NOT NULL, > postgres(# category TEXT NOT NULL, > postgres(# PRIMARY KEY (pg_hash, category) >

CREATE UNLOGGED TABLE seq faults when debug_discard_caches=1

2022-11-17 Thread Spyridon Dimitrios Agathos
Hi Hackers, while testing the developer settings of PSQL (14.5) I came across this issue: postgres=# CREATE UNLOGGED TABLE stats ( postgres(# pg_hash BIGINT NOT NULL, postgres(# category TEXT NOT NULL, postgres(# PRIMARY KEY (pg_hash, category) postgres(# ); server closed the