On 18 June 2018 at 14:36, Amit Langote <Langote_Amit_f8@lab.ntt.co.jp> wrote:
> On 2018/06/15 20:41, David Rowley wrote:
>> If the top level Append is the UNION ALL one, then there won't be any
>> partitioned_rels. If that's what you mean by no-op then, yeah. There
>> are no duplicate locks already obtained in the parent with the child
>> Append node.
>
> Yeah, that's what I meant to say. I looked for whether the locks end up
> being taken twice, once in the UNION ALL parent's ExecInitAppend and then
> again in the individual child Appends' ExecInitAppend, but that they
> don't, so the patch is right.
Thanks for looking.
Robert, do you have any objections to the proposed patch?
--
David Rowley http://www.2ndQuadrant.com/
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