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https://issues.apache.org/jira/browse/SOLR-8088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14905923#comment-14905923
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Shawn Heisey commented on SOLR-8088:
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I'm not sure whether it's the same problem. It's not a numeric field, it's a
TextField. I'm also not doing facets, just grouping.
> 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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