ElasticSearch scroll responses

bad.rb

{
  "_scroll_id"=>"c2NhbjsxOzc4NjprWFFSS01qU1JOYXVmZ3MxN0dYQVVROzE7dG90YWxfaGl0czozOw==",
  "took"=>2,
  "timed_out"=>false,
  "_shards"=>{
    "total"=>5,
    "successful"=>2,
    "failed"=>3,
    "failures"=>[
      {"status"=>500, "reason"=>"SearchContextMissingException[No search context found for id [784]]"}, {"status"=>500, "reason"=>"SearchContextMissingException[No search context found for id [787]]"},
      {"status"=>500, "reason"=>"SearchContextMissingException[No search context found for id [783]]"}
    ]
  },
  "hits"=>{"total"=>3, "max_score"=>0.0, "hits"=>[{"_index"=>"widgets_137097586694", "_type"=>"widget", "_id"=>"15", "_score"=>0.0}]}
}

good.rb

{
  "_scroll_id"=>"c2NhbjsyOzc4NTprWFFSS01qU1JOYXVmZ3MxN0dYQVVROzc4NjprWFFSS01qU1JOYXVmZ3MxN0dYQVVROzE7dG90YWxfaGl0czozOw==",
  "took"=>0,
  "timed_out"=>false,
  "_shards"=> {"total"=>5, "successful"=>5, "failed"=>0},
  "hits"=>{
    "total"=>3,
    "max_score"=>0.0,
    "hits"=>[
      {"_index"=>"widgets_137097586694", "_type"=>"widget", "_id"=>"5", "_score"=>0.0},
      {"_index"=>"widgets_137097586694", "_type"=>"widget", "_id"=>"10", "_score"=>0.0}
    ]
  }
}