[SOLR-8088] Distributed grouping seems to require docValues in 5.x, didn't in 4.x

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 5.2.1
• Assignee: Unassigned
• Reporter: Shawn Heisey
• Created: 24/Sep/15 01:53
• Updated: 20/Apr/18 03:40

Description

I have a field in my index that is lowercased after the KeywordTokenizer. I wish to do grouping on this field. It is a distributed index.

This works fine in Solr 4.9.1 running on Java 8.

When I try the distributed grouping request (with the same schema) on Solr 5.2.1, it fails, with this exception:

java.lang.IllegalStateException: unexpected docvalues type SORTED_SET for field 'ip' (expected=SORTED). Use UninvertingReader or index with docvalues.

If I make the same request directly to one of the shards on 5.2.1, it works. If I create a copyField to a field using StrField with docValues, the distributed request works ... but then I lose the lowercasing.

Issue Links

• is broken by: LUCENE-5666 Add UninvertingReader
• relates to: SOLR-12249 Better error message when grouping on a tokenized (non SortableText) field in SolrCloud