On 2017-05-04 19:56:21 -0400, Bruce Momjian wrote: > On Mon, May 1, 2017 at 08:02:46AM -0400, Robert Haas wrote: > > On Tue, Apr 25, 2017 at 11:01 AM, Bruce Momjian <br...@momjian.us> wrote: > > >> Or the ability of logical decoding to follow timeline switches. > > > > > > I didn't think logical decoding was really more than a proof-of-concept > > > until now. > > > > /me searches for jaw on floor. > > > > It sounds like you don't understand how logical decoding works. There > > are plugins -- fairly widely used, I think -- like > > https://github.com/confluentinc/bottledwater-pg and > > https://github.com/eulerto/wal2json which use the in-core > > infrastructure to do very nifty things, much like there are foreign > > data wrappers other than postgres_fdw. Even test_decoding is (perhaps > > regrettably) being used to build production solutions. The point is > > that most of the logic is in core; test_decoding or bottlewater or > > wal2json are just small plugins that tap into that infrastructure. > > > > I would not in any way refer to logical decoding as being only a proof > > of concept, even before logical replication. > > The community ships a reliable logical _encoding_, and a test logical > _decoding_.
Yes, so what? What you said is "I didn't think logical decoding was really more than a proof-of-concept until now", which is plainly wrong, given I know a significant number of users using it in production. Some of them are well known & large enterprises, and it's used to enable critical things. On Mon, May 1, 2017 at 08:02:46AM -0400, Robert Haas wrote: > Even test_decoding is (perhaps regrettably) being used to build production > solutions. E.g. to power amazon's data migration service (yes, that scares me). > My point was that based on the text it is test_decoding that can do > timeline switches, and is that significant enough to mention in the > release notes? Now, if it is that logical "encoding" now allows > external logical decoding modules to handle timeline switches, that is > different, but no one has said that yet. The change has nothing to do with test_decoding. Petr: The timeline change itself does, for the moment, not seem particularly noteworthy to me - it's not really useful atm on its own? To me it's more of infrastructure to add "logical decoding on standby" next release? > You can have all the emotional reactions you want. Nice one. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
