SOLR-6127: README improvements

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1649523 13f79535-47bb-0310-9956-ffa450edef68

solr/example/films/README.txt

@@ -17,21 +17,9 @@ This data consists of the following fields -
    * Create a "films" core
        bin/solr create_core -n films -c data_driven_schema_configs
 
-   * Update the schema (by default it will guess the field types based on the date as it is indexed):
+   * Set the schema on a couple of fields that Solr would otherwise guess differently about:
 curl http://localhost:8983/solr/films/schema/fields -X POST -H 'Content-type:application/json' --data-binary '
 [
-    {
-        "name":"genre",
-        "type":"string",
-        "stored":true,
-        "multiValued":true
-    },
-    {
-        "name":"directed_by",
-        "type":"string",
-        "stored":true,
-        "multiValued":true
-    },
     {
         "name":"name",
         "type":"text_general",
@@ -48,19 +36,43 @@ curl http://localhost:8983/solr/films/schema/fields -X POST -H 'Content-type:app
 
      - JSON: bin/post films example/films/films.json
      - XML: bin/post films example/films/films.xml
-     - CSV: bin/post films example/films/films.csv params=f.genre.split=true&f.directed_by.split=true&f.genre.separator=|&f.directed_by.separator=|
+     - CSV: bin/post films example/films/films.csv "params=f.genre.split=true&f.directed_by.split=true&f.genre.separator=|&f.directed_by.separator=|"
 
    * Let's get searching.
      - Search for 'Batman':
        http://localhost:8983/solr/films/query?q=name:batman
 
+       * If you get an error about the name field not existing, you haven't yet indexed the data
+       * If you don't get an error, but zero results, chances are that the _name_ field schema type override wasn't set
+         before indexing the data the first time.  It's easiest to simply reset the environment and try again, ensuring
+         that each step successfully executes.
+
      - Show me all 'Super hero' movies:
        http://localhost:8983/solr/films/query?q=*:*&fq=genre:%22Superhero%20movie%22
 
      - Let's see the distribution of genres across all the movies. See the facet section for the counts:
        http://localhost:8983/solr/films/query?q=*:*&facet=true&facet.field=genre
 
+     - Browse the indexed films in a traditional browser search interface:
+       http://localhost:8983/solr/films/browse
+
+       Now browse including the genre field as a facet:
+       http://localhost:8983/solr/films/browse?facet.field=genre
+
 Exploring the data further - 
 
   * Increase the MAX_ITERATIONS value, put in your freebase API_KEY and run the film_data_generator.py script using Python 3.
     Now re-index Solr with the new data.
+
+FAQ:
+  Why override the schema of the _name_ and _initial_release_date_ fields?
+
+     Without overriding those field types, the _name_ field would have been guessed as a multi-valued string field type
+     and _initial_release_date_ would have been guessed as a multi-valued tdate type.  It makes more sense in our application
+     to have the movie name be a single valued general full-text searchable field, and for the release date also to be single valued.
+
+  How do I clear and reset my environment?
+
+     bin/solr stop
+     rm -Rf server/solr/films/
+     # then start from the beginning of the instructions to start fresh