| From: | Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Excessive disk usage in WindowAgg |
| Date: | 2019-11-04 19:42:19 |
| Message-ID: | 87v9rzl98x.fsf@news-spur.riddles.org.uk |
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| Lists: | pgsql-hackers |
>>>>> "Tom" == Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
>> On 2019-11-04 19:04:52 +0000, Andrew Gierth wrote:
>>> Uh, it seems obvious to me that it should be backpatched?
>> Fine with me. But I don't think it's just plainly obvious, it's
>> essentailly a change in query plans etc, and we've been getting more
>> hesitant with those over time.
Tom> Since this is happening during create_plan(), it affects no
Tom> planner decisions; it's just a pointless inefficiency AFAICS.
Tom> Back-patching seems fine.
I will deal with it then. (probably tomorrow or so)
--
Andrew (irc:RhodiumToad)
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