From: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
---|---|
To: | "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com> |
Cc: | Merlin Moncure <mmoncure(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Request: pg_cancel_backend variant that handles 'idle in transaction' sessions |
Date: | 2015-11-04 21:11:19 |
Message-ID: | CAFj8pRD28_JKA345iCmYN3vMYm+m1hnpdnEw3Sm5GuMexEwvxQ@mail.gmail.com |
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Lists: | pgsql-hackers |
2015-11-04 21:56 GMT+01:00 Joshua D. Drake <jd(at)commandprompt(dot)com>:
> On 11/04/2015 12:31 PM, Merlin Moncure wrote:
>
> My issue isn't long statements, but broken client, that is broken in wrong
>>> state - connect is still active, but no any statement will coming.
>>>
>>
>> Right, 'Idle in transaction'. Agree that a setting directed purely at
>> that problem could set a much lower timeout, say, 5 minutes or less
>> since it almost never comes up in real applications. In fact, in 15
>> years of postgres development, I've never seen 'idle transaction' that
>> indicated anything but application malfunction.
>>
>
> I can +1 that.
>
>
>> That being said, hour timeout for general case would work for me. It
>> would only have to be set lower for very busy OLTP databases where
>> continuous vacuum is essential. In those cases, I don't mind forcing
>> all batch processes to disclose in advance they are running long.
>>
>
> Yeah about an hour sounds right.
>
I am sorry, but I have a different experience from GoodData. The few hours
autovacuum is usual. So probably, there should be exception for autovacuum,
dump, ..
Regards
Pavel
>
>
> JD
>
>
>> merlin
>>
>>
>>
>
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