title: Spark Broadcast join where 1.5 M records dataset needs to join with 150 records temp table
body: <p>I'm facing one issue where trying to join 1.5M records Dataset to another DF which is having 150 records. Performance is very bad and it's showing incorrect results. Can you please suggest broadcast join where LargeDF left join with small DF using Scala?</p>
  
  <p>Thanks!</p>