| From: | Craig Ringer <craig(at)2ndquadrant(dot)com> |
|---|---|
| To: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Petr Jelinek <petr(dot)jelinek(at)2ndquadrant(dot)com> |
| Subject: | Re: WIP: Failover Slots |
| Date: | 2016-01-26 16:09:13 |
| Message-ID: | CAMsr+YF+wm=5X3miDEGFmwxH1a8KcLyRq-F8oGDV2A-GhmfTPQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
Hi all
Here's v2 of the failover slots patch. It replicates a logical slot to a
physical streaming replica downstream, keeping the slots in sync. After the
downstream is promoted a client can replay from the logical slot.
UI to allow creation of non-failover slots is pending.
There's more testing to do to cover all the corners: drop slots, drop and
re-create, name conflicts between downstream !failover slots and upstream
failover slots, etc.
There's also a known bug where WAL isn't correctly retained for a slot
where that slot was created before a basebackup which I'll fix in a
revision shortly.
I'm interested in ideas on how to better test this.
--
Craig Ringer http://www.2ndQuadrant.com/
<http://www.2ndquadrant.com/>
PostgreSQL Development, 24x7 Support, Training & Services
| Attachment | Content-Type | Size |
|---|---|---|
| 0001-Implement-failover-slots.patch | text/x-patch | 32.9 KB |
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