Re: New Copy Formats - avro/orc/parquet

From: Andres Freund <andres(at)anarazel(dot)de>
To: Nicolas Paris <niparisco(at)gmail(dot)com>
Cc: Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>,Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>,pgsql-general(at)postgresql(dot)org
Subject: Re: New Copy Formats - avro/orc/parquet
Date: 2018-02-11 20:03:14
Message-ID: EF8C176E-03EA-4AD6-83FF-BCF5DBC76B20@anarazel.de
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On February 11, 2018 12:00:12 PM PST, Nicolas Paris <niparisco(at)gmail(dot)com> wrote:
>> > That is true, but the question is how significant the overhead is.
>If
>> > it's 50% then reducing it would make perfect sense. If it's 1% then
>no
>> > one if going to be bothered by it.
>>
>> I think it's pretty clear that it's going to be way way much more
>than
>> 1%.
>
>Good news but not sure to anderstand why.

I think you might have misunderstood my reply? I'm saying that going through PROGRAM will have significant overhead. I can't quite make sense of the rest of your reply otherwise?

Andres
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Sent from my Android device with K-9 Mail. Please excuse my brevity.

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