title: failed to run hive queries in parallel using hue query editor
body: <p>I have cdh-5 cluster with hive, impala and hue installed.</p>
  
  <p>When 2 users try to use in parallel the Hue "Query Editor" with either Impala or Hive, we never get the result back. 
  When a single user fires a query we get results without a problem
  When we tried to user Hive command line interface we could run queries in parallel.
  We also tried to create different hue users, but even when different hue users tried to run queries in parallel we still got no result</p>
  
  <p>It looks like hue configuration issue. </p>
  
  <p>Any ideas?</p>
  
  <p>Yosi</p>