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El 28/10/14 a las 15:37, Joe Van Dyk escibió:
> On Mon, Oct 27, 2014 at 6:22 AM, Emanuel Calvo <
> emanuel.calvo@2ndquadrant.com> 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?
>
Actually that means it will wait that the queries run forever. You
should think which is your maximum threshold regarding query duration
when conflicting with writes.
- --
- --
Emanuel Calvo http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
Bs. As., Argentina (GMT-3)
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