Re: Minimal logical decoding on standbys - Mailing list pgsql-hackers

From Amit Khandekar
Subject Re: Minimal logical decoding on standbys
Date
Msg-id CAJ3gD9eeOzHUZXqwXM8T=vhAnXk_GrgYbDjTYg0vMFNbmFcSKw@mail.gmail.com
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In response to Re: Minimal logical decoding on standbys  (Amit Khandekar <amitdkhan.pg@gmail.com>)
Responses Re: Minimal logical decoding on standbys
List pgsql-hackers
On Thu, 7 Nov 2019 at 14:02, Rahila Syed <rahila.syed@2ndquadrant.com> wrote:
>
> Hi Amit,
>
> I am reading about this feature and reviewing it.
> To start with, I reviewed the patch: 0005-Doc-changes-describing-details-about-logical-decodin.patch.

Thanks for picking up the patch review.

Your reply somehow spawned a new mail thread, so I reverted back to
this thread for replying.

>
> >prevent VACUUM from removing required rows from the system catalogs,
> >hot_standby_feedback should be set on the standby. In spite of that,
> >if any required rows get removed on standby, the slot gets dropped.
> IIUC, you mean `if any required rows get removed on *the master* the slot gets
> dropped`, right?

Yes, you are right. In fact, I think it is not necessary to explicitly
mention where the rows get removed. So I have just omitted "on
standby". Will include this change in the next patch versions.

-- 
Thanks,
-Amit Khandekar
EnterpriseDB Corporation
The Postgres Database Company



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