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Posted to user@couchdb.apache.org by Vladimir Ralev <vl...@gmail.com> on 2015/07/17 04:21:07 UTC
CouchDB 2.0 automatic sharding and replication of all databases
Hi guys,
I am trying to figure out if couchdb 2.0 will be capable of automatic
scaling like bigcouch. Just put some nodes out there, configure the
_nodes and how many replicas you want in the cluster and it takes care
of everything automatically.
There is this document
http://docs.couchdb.org/en/latest/cluster/sharding.html#scaling-out
which suggests I have to configure everything manually per-database
and there is no resharding.
Is there something in place to allow easier replication and migration
like in bigcouch?
Re: CouchDB 2.0 automatic sharding and replication of all databases
Posted by Robert Samuel Newson <rn...@apache.org>.
Hi,
For both systems, newly created databases will be spread across nodes as widely as possible and you can specify both Q (number of shards) and N (number of replicas of each of those shards). You can’t currently alter these parameters after database creation, though you can create a new database and replicate into it.
B.
> On 17 Jul 2015, at 09:59, Jan Lehnardt <ja...@apache.org> wrote:
>
>
>> On 17 Jul 2015, at 04:21, Vladimir Ralev <vl...@gmail.com> wrote:
>>
>> Hi guys,
>
> we are not all guys here :)
>
>> I am trying to figure out if couchdb 2.0 will be capable of automatic
>> scaling like bigcouch. Just put some nodes out there, configure the
>> _nodes and how many replicas you want in the cluster and it takes care
>> of everything automatically.
>>
>> There is this document
>> http://docs.couchdb.org/en/latest/cluster/sharding.html#scaling-out
>> which suggests I have to configure everything manually per-database
>> and there is no resharding.
>>
>> Is there something in place to allow easier replication and migration
>> like in bigcouch?
>
> Yes, CouchDB 2.0 will include a newer version of the BigCouch code.
>
> Best
> Jan
> --
> Professional Support for Apache CouchDB:
> http://www.neighbourhood.ie/couchdb-support/
>
Re: CouchDB 2.0 automatic sharding and replication of all databases
Posted by Jan Lehnardt <ja...@apache.org>.
> On 17 Jul 2015, at 04:21, Vladimir Ralev <vl...@gmail.com> wrote:
>
> Hi guys,
we are not all guys here :)
> I am trying to figure out if couchdb 2.0 will be capable of automatic
> scaling like bigcouch. Just put some nodes out there, configure the
> _nodes and how many replicas you want in the cluster and it takes care
> of everything automatically.
>
> There is this document
> http://docs.couchdb.org/en/latest/cluster/sharding.html#scaling-out
> which suggests I have to configure everything manually per-database
> and there is no resharding.
>
> Is there something in place to allow easier replication and migration
> like in bigcouch?
Yes, CouchDB 2.0 will include a newer version of the BigCouch code.
Best
Jan
--
Professional Support for Apache CouchDB:
http://www.neighbourhood.ie/couchdb-support/