val v1
For each element of SpecificArray
    Get the corresponding element from GlobalArray to use its Array[String]
         If (sum <= 100)
             for each String of the Array
                 update v1
                 // ... some calculation
                 sum += 1

println (v1)

SpecificArray.map{x => val in_global = GlobalArray.filter(e => (e._1 == x._1))
                       // I don't know how to follow
                  }

val globalMap = GlobalArray.toMap

println(SpecificArray.flatMap({case (k,v) => globalMap(k).map(s => (k,v,s))}).toList)

println(SpecificArray.flatMap({case (k,v) => globalMap(k)}).toList)

println(SpecificArray.flatMap({case (k,v) => globalMap.getOrElse(k, Array()).map(s => (k,v,s))}).toList)