[jira] [Commented] (SOLR-4647) Grouping is broken on docvalues-only fields

["Modassar Ather (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-4647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14061877#comment-14061877 ] 

Modassar Ather commented on SOLR-4647:
--------------------------------------

Hi,

I am also seeing this issue while doing grouping on docValues enabled field. I checked createField(...) method of FieldType which returns null if the field is not indexed and stored. 
Kindly provide inputs if any of the indexe/stored needs to be set to true while creating a docValue field or this is an issue.

Thanks,
Modassar


> Grouping is broken on docvalues-only fields
> -------------------------------------------
>
>                 Key: SOLR-4647
>                 URL: https://issues.apache.org/jira/browse/SOLR-4647
>             Project: Solr
>          Issue Type: Bug
>    Affects Versions: 4.2
>            Reporter: Adrien Grand
>              Labels: newdev
>
> There are a few places where grouping uses FieldType.toObject(SchemaField.createField(String, float)) to translate a String field value to an Object. The problem is that createField returns null when the field is neither stored nor indexed, even if it has doc values.
> An option to fix it could be to use the ValueSource instead to resolve the Object value (similarily to NumericFacets).



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