Re: logical replication and statistics

2017-09-26 11:56 GMT+02:00 Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>:

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> 2017-09-26 11:51 GMT+02:00 Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>:
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>> On Tue, Sep 26, 2017 at 2:50 AM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
>> wrote:
>> >
>> >
>> > 2017-09-25 19:23 GMT+02:00 Petr Jelinek <petr(dot)jelinek(at)2ndquadrant(dot)com>:
>> >>
>> >> On 25/09/17 19:19, Tom Lane wrote:
>> >> > Pavel Stehule <pavel(dot)stehule(at)gmail(dot)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.
>> >>
>> >
>> > I did some inserts, updates, ..
>> >
>> > I can recheck it - it was done on 10 RC
>>
>> I guess CREATE SUBSCRIPTION failed for whatever reason (e.g, wal_level
>> < logical on the master). Didn't you get errors from CREATE
>> SUBSCRIPTION?
>>
>
> sorry I had wal_level = logical
>

but if I remember - maybe I had this level only on master

>
> Pavel
>
>>
>> Regards,
>>
>> --
>> Masahiko Sawada
>> NIPPON TELEGRAPH AND TELEPHONE CORPORATION
>> NTT Open Source Software Center
>>
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