Put all elements of RDD into array

[Daniel Valdivia]

Hello,

I'm trying to put all the values in pair rdd into an array (or list) for later 
storing, however even if I'm collecting the data then pushing it to the array 
the array size after the run is 0.

Any idea on what I'm missing? 

Thanks in advance

scala> val tpdist: Array[Array[Double]]  = Array()
tpdist: Array[Array[Double]] = Array()

scala> 
ldaModel.asInstanceOf[DistributedLDAModel].topicDistributions.sortByKey().collect().foreach(doc
 => tpdist :+ doc._2.toArray )
                                                                                
scala> tpdist.size
res27: Int = 0