Re: jsonb format is pessimal for toast compression

From: Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>
To: Josh Berkus <josh(at)agliodbs(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Peter Geoghegan <pg(at)heroku(dot)com>, Claudio Freire <klaussfreire(at)gmail(dot)com>, "David E(dot) Wheeler" <david(at)justatheory(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>, Andrew Dunstan <andrew(at)dunslane(dot)net>, "Jan Wieck" <jan(at)wi3ck(dot)info>
Subject: Re: jsonb format is pessimal for toast compression
Date: 2014-09-18 18:27:44
Message-ID: 541B2420.9010705@vmware.com
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On 09/18/2014 07:53 PM, Josh Berkus wrote:
> On 09/16/2014 08:45 PM, Tom Lane wrote:
>> We're somewhat comparing apples and oranges here, in that I pushed my
>> approach to something that I think is of committable quality (and which,
>> not incidentally, fixes some existing bugs that we'd need to fix in any
>> case); while Heikki's patch was just proof-of-concept. It would be worth
>> pushing Heikki's patch to committable quality so that we had a more
>> complete understanding of just what the complexity difference really is.
>
> Is anyone actually working on this?
>
> If not, I'm voting for the all-lengths patch so that we can get 9.4 out
> the door.

I'll try to write a more polished patch tomorrow. We'll then see what it
looks like, and can decide if we want it.

- Heikki

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