SOLR Error from DAM Sidebar in Classic UI

Question

When loading a page in the classic UI with SOLR configured, the DAM sidebar appears empty at the following error is thrown in the error log:

org.apache.solr.common.SolrException: can not sort on multivalued field: jcr\:content\/jcr\:lastModified_string_sort

Does anyone know a fix for this?

Sham_HC · Accepted Answer

Have you defined any custom sorting index Or overlayed oob component like cf,... ? Because jcr\:lastModified_string_sort sounds suspicious & should not be there. Additionally it is not multi field.

If you have not overlayed then Please file a support ticket with below information

Output of http://host:port/system/console/bundles/.json
Output of http://host:port/oak:index.-1.json
All the logs
Debug of
- org.apache.jackrabbit.oak.plugins.index
- org.apache.jackrabbit.oak.query
- com.day.cq.search
Solr config file.

leeasling · Answer

No sir, there are no custom indexes and no overlays of OOTB components.

From digging a little deeper, in the recommended configuration for SOLR on the AEM 6.1 page, the field types are defined as multiValued="true" by default - I added a definition for jcr:lastModified and set multiValued to "false" and am currently re-indexing. If that does not resolve the issue I will file a ticket with Day Care and i'll also update this post.

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