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https://issues.apache.org/jira/browse/SOLR-10237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15927239#comment-15927239
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Tomás Fernández Löbbe commented on SOLR-10237:
----------------------------------------------

bq. Remember Document is just a wrapper around an ArrayList...
Yes, I know, but in that case the usage would be weird, something like
{code:java}
Document doc = new Document();
type.addFieldsToDoc(doc);
doc.removeField("foo");
{code}
Not too much of an issue anyway.

> Poly-Fields should error if subfield has docValues=true
> -------------------------------------------------------
>
>                 Key: SOLR-10237
>                 URL: https://issues.apache.org/jira/browse/SOLR-10237
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Tomás Fernández Löbbe
>            Priority: Minor
>         Attachments: SOLR-10237.patch, SOLR-10237.patch
>
>
> DocValues aren’t really supported in poly-fields at this point, but they 
> don’t complain if the schema definition of the subfield has docValues=true. 
> This leaves the index in an inconsistent state, since the SchemaField has 
> docValues=true but there are no DV for the field.
> Since this breaks compatibility, I think we should just emit a warning unless 
> the subfield is an instance of {{PointField}}. With 
> {{\[Int/Long/Float/Double/Date\]PointField}} subfields, this is particularly 
> important, since they use {{IndexOrDocValuesQuery}}, that would return 
> incorrect results.



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