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From Shalin Shekhar Mangar <>
Subject Re: SolrCloud Nodes infrastucture
Date Wed, 02 Oct 2013 10:37:39 GMT
Yes, it is possible to use only 3 machines by specifying maxShardsPerNode=2
(default is one). You can even host all six on one machine with
maxShardsPerNode=6 if you want.

The shard allocation won't allocate more than one replica of the same shard
on the same node if it can be helped. It will log a warning if it does that
because of maxShardsPerNode or createNodeSet constraints.

It is possible to use 3 large machines. I know plenty of users are using it
that way. It is hard to say anything about performance. You must benchmark
on your own machines, with your own data and queries.

On Wed, Oct 2, 2013 at 3:45 PM, maephisto <> wrote:

> Hi!
> I have some foggy stuff on my goggles when i'm looking at SolrCloud, maybe
> somebody can help me clear that out!
> Let's assume I have a collection that's split in 3 shards. That means i
> already have 3 nodes.
> Then I also want some replication - replication factor = 2. That's 3 more
> nodes.
> Zookeeeper it's a must so I'll give it 3 independent machines.
> Now, my question is how many machines would I need for that 6 nodes?
> Is it possible to use just 3 machines, each with two Solr instances? Will
> ZK
> then know not to assign the shard replica on the same machine as the shard
> leader ?
> Even more, is it possible to use just 3 big mean machines, each with a ZK
> instance and 2 Solr instances ? Would I be sacrificing performance?
> Thanks!
> --
> View this message in context:
> Sent from the Solr - User mailing list archive at

Shalin Shekhar Mangar.

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