I think you should also be able to get away with casting it back and forth in this case using .asInstanceOf.
On Wed, Nov 19, 2014 at 4:39 PM, Daniel Siegmann <daniel.siegm...@velos.io> wrote: > I have a class which is a subclass of Tuple2, and I want to use it with > PairRDDFunctions. However, I seem to be limited by the invariance of T in > RDD[T] (see SPARK-1296 <https://issues.apache.org/jira/browse/SPARK-1296> > ). > > My Scala-fu is weak: the only way I could think to make this work would be > to define my own equivalent of PairRDDFunctions which works with my > class, does type conversions to Tuple2, and delegates to PairRDDFunctions. > > Does anyone know a better way? Anyone know if there will be a significant > performance penalty with that approach? > > -- > Daniel Siegmann, Software Developer > Velos > Accelerating Machine Learning > > 54 W 40th St, New York, NY 10018 > E: daniel.siegm...@velos.io W: www.velos.io >
