Hi All, The function *mapPartitions *in RDD.scala <https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/rdd/RDD.scala> takes a boolean parameter *preservesPartitioning. *It seems if that parameter is passed as *false*, the passed function f will operate on the data only once, whereas if it's passed as *true *the function will operate on each partition of the data.
In my case, whatever boolean value I pass, *f* operates on each partition of data. Any help, regarding why I am getting this unexpected behaviour?
