| From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Turning off HOT/Cleanup sometimes |
| Date: | 2015-03-12 19:48:00 |
| Message-ID: | 5501ED70.60507@gmx.net |
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| Lists: | pgsql-hackers |
On 3/12/15 5:41 AM, Andres Freund wrote:
> On 2015-03-11 20:55:18 -0400, Peter Eisentraut wrote:
>> I don't think so. Andres basically wanted a nontrival algorithm to
>> determine how much pruning to do during a read-only scan. And Robert
>> basically said, that's not really possible.
>
> I don't think either of us made really strong statements.
I didn't mean to put words in your mouth. I just wanted to summarize
the thread as, Andres wanted more fine-tuning on the behavior, Robert
expressed serious doubts that that will lead to an acceptable result.
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