[SOLR-3425] CloudSolrServer can't create cores when using the zkHost based constructor

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 4.1
• Component/s: SolrCloud
• Assignee: Mark Miller
• Reporter: Tommaso Teofili
• Created: 30/Apr/12 22:24
• Updated: 24/Jan/13 06:33
• Resolved: 04/Dec/12 15:26

Description

When programmatically creating cores with a running SolrCloud instance the CloudSolrServer uses the slices nodes information to feed the underlying LBHttpSolrServer so it fails to create cores as there aren't any slices for any new collection (as it's still to be created).
This happens when using the CloudSolrServer constructor which takes the ZK host as only parameter while it can be avoided by using the constructor which also takes the list of Solr URLs and the underlying LBHttpSolrServer is actually used for making the core creation request.
However it'd be good to use the ZK host live nodes information to automatically issue a core creation command on one of the underlying Solr hosts without having to specify the full list of URLs beforehand.

The scenario is when one wants to create a collection with N shards so the client sends N core creation requests for the same collection thus the SolrCloud stuff should just take care of choosing the host where to issue the core creation request and update the cluster state.

Issue Links

• relates to: SOLR-4140 Collection API: CloudSolrServer cannot be used to create collection without referencing an existing collection