Join query fails on coordinator node even when collections are co-located

[Endika Posadas]

Hi,

We're running dedicated coordinator nodes for query performance, with
collections that are properly co-located across data nodes.


When sending a join query (fromIndex pointing to a co-located collection)
through the coordinator, we get an error:

"error":{
    
"metadata":["error-class","org.apache.solr.common.SolrException","root-error-class","org.apache.solr.common.SolrException"],
    "msg":"SolrCloud join: To join with a collection that might not be
co-located, use method=crossCollection.",
    "code":400
  }


The same query works fine when sent directly to a data node.

It seems like the coordinator is trying to resolve the join instead of
delegating it to the data nodes. Is there a workaround around this?

Thanks