| From: | Sergey Koposov <Sergey(dot)Koposov(at)ed(dot)ac(dot)uk> |
|---|---|
| To: | "tgl(at)sss(dot)pgh(dot)pa(dot)us" <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | "pgsql-bugs(at)lists(dot)postgresql(dot)org" <pgsql-bugs(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: BUG #18909: Query creates millions of temporary files and stalls |
| Date: | 2025-05-02 22:44:19 |
| Message-ID: | beb051161520fc48248c2f90582eb15c6a71d239.camel@ed.ac.uk |
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| Lists: | pgsql-bugs |
On Fri, 2025-05-02 at 18:12 -0400, Tom Lane wrote:
> PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> > I have a query: ...
> > that I ran (from python client), and after it didn't finish in ~ an hour, i
> > started to investigate, finding that the pgsql_tmp folder had 15 million
> > temporary files from that query.
>
> Does it behave any better if you disable parallelism
> (set max_parallel_workers_per_gather = 0) ?
Yes, I've just tried and that also prevents the issue.
S
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