Better option to use Querying in Spark

[prabeesh k]

Hi,

I have seen three different ways to query data from Spark

   1. Default SQL support(
   
https://github.com/apache/spark/blob/master/examples/src/main/scala/org/apache/spark/sql/examples/HiveFromSpark.scala
   )
   2. Shark
   3. Blink DB

I would like know which one is more efficient

Regards.
prabeesh