The check box with label "Use Solr" determines whether a search uses Solr. Solr is a non-SQL database, which is used to cache search results.
If a search is set to use Solr (or has free text Filters), then it MUST be populated after it has been saved:
- Save the search
- Wait for the response, that the search was saved successfully
- Wait for the list of searches to reload
- Click the "cog wheel"
- Affirm that you want to populate the search. This creates a Job, which populates the Solr database.
- Notice that a new Job is "waiting".
- Wait for the Job to complete.
- Refresh the Search Editor to ensure that the "cog-wheel" is no longer present.