| From: | Amit Khandekar <amitdkhan(dot)pg(at)gmail(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | tushar <tushar(dot)ahuja(at)enterprisedb(dot)com>, Petr Jelinek <petr(dot)jelinek(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Craig Ringer <craig(at)2ndquadrant(dot)com>, Petr Jelinek <petr(at)2ndquadrant(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Minimal logical decoding on standbys |
| Date: | 2019-05-31 05:38:47 |
| Message-ID: | CAJ3gD9czydP5VnYPTW_TSLK8p26TOzHx3hPTPT-hdkLVasFVVQ@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Thu, 30 May 2019 at 20:13, Andres Freund <andres(at)anarazel(dot)de> wrote:
>
> Hi,
>
> On 2019-05-30 19:46:26 +0530, Amit Khandekar wrote:
> > @@ -1042,7 +1042,8 @@ ReplicationSlotReserveWal(void)
> > if (!RecoveryInProgress() && SlotIsLogical(slot))
> > {
> > ....
> > }
> > else
> > {
> > - restart_lsn = GetRedoRecPtr();
> > + restart_lsn = SlotIsLogical(slot) ?
> > + GetXLogReplayRecPtr(&ThisTimeLineID) : GetRedoRecPtr();
> >
> > But then when I do pg_create_logical_replication_slot(), it hangs in
> > DecodingContextFindStartpoint(), waiting to find new records
> > (XLogReadRecord).
>
> But just till the primary has logged the necessary WAL records? If you
> just do CHECKPOINT; or such on the primary, it should succeed quickly?
Yes, it waits until there is a commit record, or (just tried) until a
checkpoint command.
>
> Greetings,
>
> Andres Freund
--
Thanks,
-Amit Khandekar
EnterpriseDB Corporation
The Postgres Database Company
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Donald Shtjefni | 2019-05-31 06:35:31 | Time range |
| Previous Message | Alexander Korotkov | 2019-05-31 04:01:15 | Re: New committer: David Rowley |