compiled ERROR in line 235, does anyone have the same problem

[CasyWang]

examples/src/main/scala/simrank/MatrixImpl.scala

Line 235 in a3b8411

new InterruptibleIterator(context, aggregator.combineCombinersByKey(iter))

type mismatch; found : Iterator[(Int, (Int, (it.unimi.dsi.fastutil.ints.IntArrayList, it.unimi.dsi.fastutil.doubles.DoubleArrayList)))] required: Iterator[_ <: Product2[Int,(it.unimi.dsi.fastutil.ints.IntArrayList,
it.unimi.dsi.fastutil.doubles.DoubleArrayList)]]

[poson]

me,too