Hi Zhen, The Scala iterator trait supports cloning via the duplicate method (http://www.scala-lang.org/api/current/index.html#scala.collection.Iterator@duplicate:(Iterator[A],Iterator[A])).
Regards, Frank Austin Nothaft fnoth...@berkeley.edu fnoth...@eecs.berkeley.edu 202-340-0466 On Jun 13, 2014, at 9:28 PM, zhen <z...@latrobe.edu.au> wrote: > Thank you for your suggestion. We will try it out and see how it performs. We > think the single call to mapPartitions will be faster but we could be wrong. > It would be nice to have a "clone method" on the iterator. > > > > -- > View this message in context: > http://apache-spark-user-list.1001560.n3.nabble.com/multiple-passes-in-mapPartitions-tp7555p7616.html > Sent from the Apache Spark User List mailing list archive at Nabble.com.
