Re: [HACKERS] logical replication and statistics

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От Petr Jelinek
Тема Re: [HACKERS] logical replication and statistics
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Msg-id 8b3adf2e-402a-5795-e543-b72c4935167d@2ndquadrant.com
обсуждение исходный текст
Ответ на Re: [HACKERS] logical replication and statistics  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: [HACKERS] logical replication and statistics  (Pavel Stehule <pavel.stehule@gmail.com>)
Список pgsql-hackers
On 25/09/17 19:19, Tom Lane wrote:
> Pavel Stehule <pavel.stehule@gmail.com> writes:
>> I had two instances on one server with different port. I am sure, so
>> replication was functional. Only one issue is statistics
> 
>> Master:
> 
>> CREATE TABLE foo(id int primary key, a int);
>> CREATE PUBLICATION test_pub FOR TABLE foo;
>> INSERT INTO foo VALUES(1, 200);
> 
>> slave
> 
>> CREATE TABLE foo(id int primary key, a int);
>> CREATE SUBSCRIPTION test_sub CONNECTION 'port=5432' PUBLICATION test_pub;
> 
>> That was all
> 
> In this example, nothing's been done yet by the actual replication
> apply process, only by the initial table sync.  Maybe that accounts
> for your not seeing stats?
> 

The main replication worker should still be running though. The output
of pg_stat_replication should only be empty if there is nothing running.

--  Petr Jelinek                  http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training &
Services


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