Re: some queries on standby preventing replication updates

From: David G Johnston <david(dot)g(dot)johnston(at)gmail(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: some queries on standby preventing replication updates
Date: 2014-10-28 18:57:12
Message-ID: 1414522632926-5824675.post@n5.nabble.com
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Joe Van Dyk wrote
> On Mon, Oct 27, 2014 at 6:22 AM, Emanuel Calvo <

> emanuel.calvo@

>> wrote:
>
>>
>> El 23/10/14 a las 17:40, Joe Van Dyk escibió:
>> > Hi,
>> >
>> > I have a master and a slave database.
>> >
>> > I've got hot_standby_feedback turned on,
>> > max_standby_streaming_delay=-1. I've configured the master and slave
>> > to keep a few days of WALs around.
>> >
>> > I've noticed that when some large queries are run on the standby
>> > machine (ones that take more than a minute or so), replication updates
>> > are paused. Is there a way to fix this?
>> >
>> You may need to set a value on max_standby_streaming_delay, which
>> controls the time
>> before cancelling the standby queries when a conflict occurs on a
>> wal-records-about-to-be-applied.
>>
>> Source:
>> http://www.postgresql.org/docs/9.3/static/runtime-config-replication.html
>
> I'm using -1 for that option, would using something different be better?

Why did you choose -1?

David J.

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