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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andres Freund <andres@anarazel.de>
cc: Fujii Masao <masao.fujii@oss.nttdata.com>,
        Alexey Kondratov <a.kondratov@postgrespro.ru>,
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Subject: Re: [HACKERS] make async slave to wait for lsn to be replayed
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Comments: In-reply-to Andres Freund <andres@anarazel.de>
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Andres Freund <andres@anarazel.de> writes:
> I don't think a function is a good idea - it'll cause a snapshot to be
> held while waiting. Which in turn will cause hot_standby_feedback to not
> be able to report an increased xmin up. And it will possibly hit
> snapshot recovery conflicts.

Good point, but we could address that by making it a procedure no?

			regards, tom lane