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https://issues.apache.org/jira/browse/SOLR-4221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13694670#comment-13694670
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Noble Paul commented on SOLR-4221:
----------------------------------

Ideally a user would want new shards to go to new nodes so that the existing 
nodes are not overloaded. Now it is not possible to achieve it. If I start a 
node before t5he command is issued it would just join some random shard and it 
is taken up. If I issue the CREATESHARD command before adding nodes it 
will/should fail saying insufficient nodes .


Actually, it is relevant for SPLITSHARDas well. Now the new shards created will 
go and live in an already loaded node.

The proposed behavior is this. If I startup a node w/o specifying the 
collection , it would just be a part of the live nodes and no shard and 
collection should be assigned to it. So when a new shard has to be created , 
the command  can lookup and see if there are unutilized live nodes and it can 
be assigned there
                
> Custom sharding
> ---------------
>
>                 Key: SOLR-4221
>                 URL: https://issues.apache.org/jira/browse/SOLR-4221
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Yonik Seeley
>            Assignee: Noble Paul
>         Attachments: SOLR-4221.patch
>
>
> Features to let users control everything about sharding/routing.

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