Re: [sqlsmith] Failed assertions on parallel worker shutdown

From: Andreas Seltenreich <seltenreich(at)gmx(dot)de>
To: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [sqlsmith] Failed assertions on parallel worker shutdown
Date: 2016-05-23 11:18:34
Message-ID: 87oa7x58fp.fsf@elite.ansel.ydns.eu
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Amit Kapila writes:

> Earlier problems were due to the reason that some unsafe/restricted
> expressions were pushed below Gather node as part of target list whereas in
> the plan6, it seems some unsafe node is pushed below Gather node. It will
> be helpful if you can share the offending query?

plan6 corresponds to this query:

select
pg_catalog.anyarray_out(
cast((select most_common_vals from pg_catalog.pg_stats limit 1 offset 41)
as anyarray)) as c0
from
public.quad_point_tbl as ref_0 where ref_0.p ~= ref_0.p;

regards,
Andreas

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