anchor.diff:  http://github.com/elastic/elasticsearch-hadoop/issues/793[#793]
   * Parsing error messages can cause a NPE 
   http://github.com/elastic/elasticsearch-hadoop/issues/776[#776]
  +* shard preference concatenation with | gives query error
  +https://github.com/elastic/elasticsearch-hadoop/issues/874[#874]
   Spark::
   * Dropping a whole column of a DataFrame while indexing the DF into ES 
   http://github.com/elastic/elasticsearch-hadoop/issues/841[#841]
  
positive.code: http://github.com/elastic/elasticsearch-hadoop/issues/772[#772]
  * Tests fail in build 
  http://github.com/elastic/elasticsearch-hadoop/issues/755[#755]
  
  [float]
  [[nonissue-5.0.0]]
  
negative.code: * Pig maps can have values of different types 
  http://github.com/elastic/elasticsearch-hadoop/issues/777[#777]
  Rest::
  * Update/Upsert bulk actions with scripts are broken for ES 1.x as of 5.0.0-alpha5
  http://github.com/elastic/elasticsearch-hadoop/issues/817[#817]
  * Shard size estimations for Slice API do not target shards 
  http://github.com/elastic/elasticsearch-hadoop/issues/843[#843]
  