| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Amit Khandekar <amitdkhan(dot)pg(at)gmail(dot)com> |
| 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: | 2019-05-30 14:17:23 |
| Message-ID: | 20190530141723.ox5y4wda6alvo4uj@alap3.anarazel.de |
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| Lists: | pgsql-hackers |
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?
Greetings,
Andres Freund
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