Is there a difference between df.cache() vs df.rdd.cache()

[Supun Nakandala]

Hi all,

I have been experimenting with cache/persist/unpersist methods with respect
to both Dataframes and RDD APIs. However, I am experiencing different
behaviors Ddataframe API compared RDD API such Dataframes are not getting
cached when count() is called.

Is there a difference between how these operations act wrt to Dataframe and
RDD APIs?

Thank You.
-Supun