Error in Solr 6.6 Example schemas re: DocValues for StrField type must be single-valued?

[Tom Burton-West <tb...@umich.edu>]

Hello,

The comments in the example schema's for Solr 6.6, for state that the
StrField type must be single-valued to support doc values

For example
Solr-6.6.0/server/solr/configsets/basic_configs/conf/managed-schema:

216      <!-- The StrField type is not analyzed, but indexed/stored
verbatim.
   217         It supports doc values but in that case the field needs to be
   218         single-valued and either required or have a default value.
   219        -->

However, on line 221 a StrField is declared with docValues that is
multiValued:
221      <fieldType name="strings" class="solr.StrField"
sortMissingLast="true" multiValued="true" docValues="true" />

Also note that the comments above say that the field must either be
required or have a default value, but line 221 appears to satisfy neither
condition.

The JavaDocs indicate that StrField can be multi-valued
https://lucene.apache.org/core/6_6_0//core/org/apache/
lucene/index/DocValuesType.html

Is the comment in the example schema file  completely wrong, or is there
some issue with using a docValues with a multivalued StrField?

Tom Burton-West

https://www.hathitrust.org/blogslarge-scale-search