Re: Inconsistency between pg_stat_activity and log_duration

From: Tatsuo Ishii <ishii(at)postgresql(dot)org>
To: tgl(at)sss(dot)pgh(dot)pa(dot)us
Cc: amit(dot)kapila16(at)gmail(dot)com, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Inconsistency between pg_stat_activity and log_duration
Date: 2014-02-07 23:31:47
Message-ID: 20140208.083147.7144463289061930.t-ishii@sraoss.co.jp
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>> The query is piggy backed on the same connection to PostgreSQL opend
>> by user (pgpool-II cannot issue "sync" because it closes the
>> transaction, which in turn closes user's unnamed portal).
>
> This argument (and usage) seems pretty broken. If you don't issue
> sync then how do you know you've gotten all of the command's output?
>
> If you're issuing a flush instead, maybe we could consider whether it's
> reasonable to do an extra pgstat_report_activity() upon receipt of a
> flush message. But -1 for putting it into the normal control flow.

Pgpool-II issues "flush" of course.

Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese: http://www.sraoss.co.jp

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