Collections API and adding new boxes

["Jim.Musil" <Ji...@target.com>]

Hi,

Let's say I have a zookeeper ensemble with several Solr nodes connected to it. I've created a collection successfully and all is well.

What happens when I want to add another solr node?

I've tried spinning one up and connecting it to zookeeper, but the new node doesn't "join" the collection.  What's the expected next step?

This is Solr 5.1.

Thanks!
Jim Musil

Re: Collections API and adding new boxes

[Erick Erickson <er...@gmail.com>]

See particularly the ADDREPLICA command and the
"node" parameter. You might not even need the "node"
parameter since when you add a replica Solr does its
best to put the new replica on an underutilized node.

Best,
Erick

On Thu, Jun 18, 2015 at 2:58 PM, Shawn Heisey <ap...@elyograg.org> wrote:
> On 6/18/2015 3:23 PM, Jim.Musil wrote:
>> Let's say I have a zookeeper ensemble with several Solr nodes connected to it. I've created a collection successfully and all is well.
>>
>> What happens when I want to add another solr node?
>>
>> I've tried spinning one up and connecting it to zookeeper, but the new node doesn't "join" the collection.  What's the expected next step?
>>
>> This is Solr 5.1.
>
> The new node will be part of the cloud as soon as it starts, but until
> you take action with the Collections API, it will not have any indexes
> on it.  SolrCloud does not automatically create replicas except in a
> very specific set of circumstances that I do not think are very common.
>
> You'll need to either create a new collection or take steps to modify
> your current collection(s) so that one or more shard replicas are
> located on the new node.
>
> https://cwiki.apache.org/confluence/display/solr/Collections+API
>
> Thanks,
> Shawn
>

Re: Collections API and adding new boxes

[Shawn Heisey <ap...@elyograg.org>]

On 6/18/2015 3:23 PM, Jim.Musil wrote:
> Let's say I have a zookeeper ensemble with several Solr nodes connected to it. I've created a collection successfully and all is well.
>
> What happens when I want to add another solr node?
>
> I've tried spinning one up and connecting it to zookeeper, but the new node doesn't "join" the collection.  What's the expected next step?
>
> This is Solr 5.1.

The new node will be part of the cloud as soon as it starts, but until
you take action with the Collections API, it will not have any indexes
on it.  SolrCloud does not automatically create replicas except in a
very specific set of circumstances that I do not think are very common.

You'll need to either create a new collection or take steps to modify
your current collection(s) so that one or more shard replicas are
located on the new node.

https://cwiki.apache.org/confluence/display/solr/Collections+API

Thanks,
Shawn