def upateContigSumRange(b:Broadcast[UpdateSumStruct],reducedEvents: RDD[(String,(Array[Short],Int,Int,Int,Int))]) = {
    reducedEvents.map{
      c => {
        val upd = b.value.upd

        val (contig, (eventsArray, minPos, maxPos, contigLength, firstEvent)) = c
        if(upd.get( (contig,minPos) ).nonEmpty)
          (contig, (eventsArray, minPos, maxPos, contigLength, upd((contig, minPos))))
        else
          (contig, (eventsArray, minPos, maxPos, contigLength, new mutable.HashMap[Int, Int]()))
      }
    }
  }
}