Hi, Sparkers:
I just happened to search in google for something related to the
RangePartitioner of spark, and found an old thread in this email list as here:
http://apache-spark-user-list.1001560.n3.nabble.com/RDD-and-Partition-td991.html
I followed the code example mentioned in that email thread
RangePartitioner does not actually provide a guarantee that all partitions
will be equal sized (that is hard), and instead uses sampling to
approximate equal buckets. Thus, it is possible that a bucket is left empty.
If you want the specified behavior, you should define your own partitioner.
It
