From: | Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> |
---|---|
To: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
Cc: | PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: logical replication and statistics |
Date: | 2017-09-25 11:12:10 |
Message-ID: | CAD21AoAU2yDG83H2RrbvULXUbWg-CC8T082cJYoA4+cduywFTg@mail.gmail.com |
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Lists: | pgsql-hackers |
On Mon, Sep 25, 2017 at 12:58 AM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
> Hi
>
> I did trivial example of logical replication (one table, one publication,
> one subscription)
>
> I am little bit surprised so after some work - the replication is working,
> the statistics are empty
>
> #master
> postgres=# select * from pg_stat_replication ;
> (0 rows)
>
> #slave
> postgres=# select * from pg_stat_subscription ;
> -[ RECORD 1 ]---------+---------
> subid | 16472
> subname | test_sub
> pid |
> relid |
> received_lsn |
> last_msg_send_time |
> last_msg_receipt_time |
> latest_end_lsn |
> latest_end_time |
>
> Should be some enabled?
>
If the subscription is disabled, the statistics of subscription is
empty and no wal sender processes launch. The test_sub can start the
replication by ALTER SUBSCRIPTION test_sub ENABLE.
Regards,
--
Masahiko Sawada
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center
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