[SOLR-13170] Creating a 10x4 collection in the admin UI shows errors even though the collection is successfully created

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 8.0, 9.0
• Component/s: Admin UI
• Assignee: Unassigned
• Reporter: Erick Erickson
• Created: 26/Jan/19 03:55
• Updated: 08/Jun/19 15:03

Description

Steps to reproduce:

• Set up a 4-node collection (I did this locally)
• Use the admin UI to create a collection with the _default configset, 10 shards and 4 replicas each. Make sure to make maxShardsPerNode 10 too.
• Go ahead and create it.

The Admin UI cranks away for a bit then says "Collection to Solr lost" and "Collection already exists". However, the collection is created successfully.

I do see this in the logs:
ERROR (OverseerThreadFactory-9-thread-2-processing-n:192.168.1.122:8981_solr) [ ] o.a.s.c.a.c.OverseerCollectionMessageHandler Collection: eoe operation: create failed:org.apache.solr.common.SolrException: collection already exists: eoe

cUrling in this command reports no errors, either on the terminal window or in the logs:
http://localhost:8981/solr/admin/collections?action=CREATE&name=eoe1&numShards=10&replicationFactor=4&maxShardsPerNode=10&collection.configName=_default