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From: Tom Lane <tgl@sss.pgh.pa.us>
To: skoposov@ed.ac.uk
cc: pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #18909: Query creates millions of temporary files and stalls
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Comments: In-reply-to PG Bug reporting form <noreply@postgresql.org>
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PG Bug reporting form <noreply@postgresql.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) ?

			regards, tom lane