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Posted to solr-user@lucene.apache.org by Mark <st...@gmail.com> on 2013/11/06 01:14:12 UTC

Configuring number or shards

Can you configure the number of shards per collection or is this a system wide setting affecting all collections/indexes?

Thanks

Re: Configuring number or shards

Posted by Shawn Heisey <so...@elyograg.org>.

On 11/5/2013 5:14 PM, Mark wrote:
> Can you configure the number of shards per collection or is this a system wide setting affecting all collections/indexes?

The collections API has a CREATE action.  You can specify numShards as a 
parameter.  This is better that defining numShards as a java system 
property when starting Solr.

http://wiki.apache.org/solr/SolrCloud#Managing_collections_via_the_Collections_API

Currently it is not possible to directly change the number of shards on 
a collection once it is created, but it is possible to split a shard 
with the SPLITSHARD action, also discussed on that wiki page.  This will 
result in a collection that has more shards, but the document 
distribution will not be identical to a new collection with the same 
number of total shards.

Thanks,
Shawn