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

["Shawn Heisey (JIRA)" <ji...@apache.org>]

Shawn Heisey created SOLR-8088:
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             Summary: Distributed grouping seems to require docValues in 5.x, didn't in 4.x
                 Key: SOLR-8088
                 URL: https://issues.apache.org/jira/browse/SOLR-8088
             Project: Solr
          Issue Type: Bug
    Affects Versions: 5.2.1
            Reporter: Shawn Heisey


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:

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

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.



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