Re: hashagg slowdown due to spill changes

From: Jeff Davis <pgsql(at)j-davis(dot)com>
To: Andres Freund <andres(at)anarazel(dot)de>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>
Cc: Tomas Vondra <tv(at)fuzzy(dot)cz>, pgsql-hackers(at)lists(dot)postgresql(dot)org, pgsql-hackers(at)postgresql(dot)org, Melanie Plageman <melanieplageman(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>
Subject: Re: hashagg slowdown due to spill changes
Date: 2020-06-13 18:48:09
Message-ID: 8375581a7a0ce8e32b6e221a4378decdb658adcf.camel@j-davis.com
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On Fri, 2020-06-12 at 17:12 -0700, Andres Freund wrote:
> Do you think we should tackle this for 13? To me 4cad2534da seems
> like a
> somewhat independent improvement to spillable hashaggs.

We've gone back and forth on this issue a few times, so let's try to
get some agreement before we revert 4cad2534da. I added Robert because
he also seemed to think it was a reasonable idea.

Regards,
Jeff Davis

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