Re: dshash_find_or_insert vs. OOM - Mailing list pgsql-hackers

> On Mar 19, 2026, at 01:46, Robert Haas <robertmhaas@gmail.com> wrote:
>
> On Tue, Mar 17, 2026 at 9:34 PM Chao Li <li.evan.chao@gmail.com> wrote:
>> When OOM happens, Assert((flags & DSHASH_INSERT_NO_OOM) != 0); makes sense. But for resize(), the assert is inside
resize(),while for insert_into_bucket(), the assert is in the caller. That feels a bit inconsistent to me, and I think
ithurts readability a little. A reader might wonder why there is no corresponding assert after resize() unless they go
readthe function body. 
>
> Adjusted.
>
>> Making this a nested block does have the benefit of keeping dsa_flags close to where it is used. But from my
impression,this style is still fairly uncommon in the codebase. I worry it may implicitly signal to other hackers that
thisis an acceptable pattern. So unless we intentionally want to encourage that style, I would lean toward avoiding it
here.
>
> Yeah, that was dumb. Fixed.
>
> Thanks for the review; here's v2.
>
> --
> Robert Haas
> EDB: http://www.enterprisedb.com
> <v2-0001-dshash-Make-it-possible-to-suppress-out-of-memory.patch>

Thanks for updating the patch. V2 LGTM.

Best regards,
--
Chao Li (Evan)
HighGo Software Co., Ltd.
https://www.highgo.com/