Re: Is BDR support distributed table on slave nodes with ACID and join support.

1,2,3: You can't shard with BDR. It's only for multimaster (at least for
now). Please read the docs.

On Fri, Jul 17, 2015 at 9:02 AM, Amit Bondwal <bondwal(dot)amit(at)gmail(dot)com>
wrote:

> Hello everyone,
>
> We ae working on a application in which we are using posgresql as a
> database. We are sure that in future it will extend to level that we have
> to scale it horizontally. We have some tables which are going to be more
> than 90% of database size.
>
> I looked at pg_shard, as per my understanding it is for nosql data, in our
> case we are going to use postgresql RDBMS features without nosql, pg_shard
> have lot on limitation as per our case.
>
> I looked at postgresql-xl, it looks good as per our requirements, but we
> have to do a lot of things to make it high availaiblity and it don't have
> debian packages available for debian.
>
> Now I see BDR, it looks good, it have multimasters, we can start with one
> master and later we can add more master servers to avoid failover.
> Bellow are my queries:-
>
> 1. If start with postgresql 9.4 database, later can I upgrade it to DBR
> with these already large table, can I distribute these tables or shard
> them. Do I need to do some extra changes in database or it will be
> complicate later.
>
> 2. how can I distribute some of tables on my slave nodes, if it have any
> limitations please let me know.
>
> 3. if I started with 4 or 5 node cluster with one master and rest of slave
> nodes, how can I take backup of this distributed database to one of my
> other server or backup location.
>
> Please suggest me what would be the best approch for this.
>
> --
> Thanks & Regards,
>
> Amit Bondwal
>