anchor.diff:  
   ==== request_handler
   
  -Set the Solr request handler for queries. This option can be used to export results from Solr via `/export` handler which streams data out of Solr. See https://cwiki.apache.org/confluence/display/solr/Exporting+Result+Sets[Exporting Result Sets] for more information.
  +Set the Solr request handler for queries. This option can be used to export results from Solr via `/export` handler which streams data out of Solr. See https://lucene.apache.org/solr/guide/exporting-result-sets.html[Exporting Result Sets] for more information.
   
   The `/export` handler needs fields to be explicitly specified. Please use the `fields` option or specify the fields in the query.
   
   Usage: `option("request_handler", "/export")`
  -Default: /select 
  +Default: /select
   
   ==== Increase Read Parallelism using Intra-Shard Splits
   
  
positive.code: 
  ==== gen_uniq_key
  
  If the documents are missing the unique key (derived from Solr schema), then the `gen_uniq_key` option will generate a unique value for each document before indexing to Solr. Instead of this option, the http://lucene.apache.org/solr/5_5_0/solr-core/org/apache/solr/update/processor/UUIDUpdateProcessorFactory.html[UUIDUpdateProcessorFactory] can be used to generate UUID values for documents that are missing the unique key field
  
  Usage: `option("gen_uniq_key", "true")`
  
  
negative.code: //tag::spark-auth[]
  == Authenticating with Solr
  
  For background on Solr security, see: https://lucene.apache.org/solr/guide/6_6/securing-solr.html[Securing Solr].
  
  === Kerberos
  
  The Kerberos config should be set via system param `java.security.auth.login.config` on extraJavaOptions for both executor and driver.
  
  ==== SparkApp
  The SparkApp framework (in spark-solr) allows you to pass the path to a JAAS authentication configuration file using the `-solrJaasAuthConfig option`.
  