Re: Replication failed after stalling

On Sun, Dec 29, 2013 at 9:56 PM, Joe Van Dyk <joe(at)tanga(dot)com> wrote:
> On Wed, Dec 18, 2013 at 3:39 PM, Sergey Konoplev <gray(dot)ru(at)gmail(dot)com> wrote:
>>
>> On Wed, Dec 18, 2013 at 11:26 AM, Joe Van Dyk <joe(at)tanga(dot)com> wrote:
>> > I'm running Postgresql 9.3. I have a streaming replication server.
>> > Someone
>> > was running a long COPY query (8 hours) on the standby which halted
>> > replication. The replication stopped at 3:30 am. I canceled the
>> > long-running
>> > query at 9:30 am and replication data started catching up.
>>
>> What do you mean by "COPY on the standby halted replication"?
>
> If I run "COPY (select * from complicate_view) to stdout" on the standby,
> I've noticed that sometimes halts replication updates to the slave.
>
> For example, that's happening right now and "now() -
> pg_last_xact_replay_timestamp()" is 22 minutes. There's many transactions
> per second being committed on the master. Once that query is canceled, the
> slave catches up immediately.

And what

\x
select * from pg_stat_repication;

shows?

--
Kind regards,
Sergey Konoplev
PostgreSQL Consultant and DBA

http://www.linkedin.com/in/grayhemp
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