Re: Multimaster

Hi Simon,

Yes, we will distributed all our code under PostgreSQL license.
Right now we are using copy of pglogical_output plugin + receiver part written based on BDR code (just because when we started work on multimaster pglogical plugin was not released).
We have plans to eliminate copies of pglogical plugin files from our code and instead of it refer pglogical plugin.

Right now the main problem is parallel apply: we need to apply changes concurrently to avoid unintended dependencies causing deadlocks and provide reasonable performance.

We also need 2PC support but this code was sent to you by Stas, so I hope that sometime it will be included in PostgreSQL core and pglogical plugin.

There are also some minor technical issues which lead us to making few changes in pglogical code but we tried to do our best to keep original versions unchanged, so we can switch to public version in future.

On 1 April 2016 at 11:33, Konstantin Knizhnik <k.knizhnik@postgrespro.ru> wrote:

 

Our company PostgresPRO is now developing multimaster for Postgres, some analogue of MySQL Galera.
It is based on logical replication and pglogical plugin from 2ndQuandrant and uses distributed transaction manager.

Hi Konstantin,

Is this open source with The PostgreSQL Licence?

Will you be contributing those changes to the BDR project, or is this a permanent fork of that?

Thanks

--

Simon Riggs                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

-- 
Konstantin Knizhnik
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company