Remove Kryo references in SharkEnv. The ShuffleSerializer is explicitly specified as the object serializer for shuffle ops.
Remove Kryo references in SharkEnv. The ShuffleSerializer is explicitly specified as the object serializer for shuffle ops.

sjyk/sampleclean,lzshlzsh/shark,mattyb149/blinkdb,mapr/shark,sameeragarwal/blinkdb,sjyk/sampleclean,mapr/shark,mattyb149/blinkdb,alabid/blinkdb,sameeragarwal/blinkdb,lzshlzsh/shark,sjyk/sampleclean,sameeragarwal/blinkdb,amplab/shark,amplab/shark,lzshlzsh/shark,alabid/blinkdb,alabid/blinkdb,mattyb149/blinkdb,mapr/shark,amplab/shark