Force a Spark table with name name to be loaded into memory.
Operations on cached tables should normally (although not always)
be more performant than the same operation performed on an uncached
table.
tbl_cache(sc, name, force =TRUE)
Arguments
sc
A spark_connection.
name
The table name.
force
Force the data to be loaded into memory? This is accomplished
by calling the count API on the associated Spark DataFrame.