Hello Asmath,
Your list exist inside the driver, but you try to add element in it from
the executors. They are in different processes, on different nodes, they
do not communicate just like that.
https://spark.apache.org/docs/latest/rdd-programming-guide.html#actions
There exist an action called
Hi,
I am initiating arraylist before iterating throuugh the map method. I am
always getting the list size value as zero after map operation.
How do I add values to list inside the map method of dataframe ? any
suggestions?
val points = new
java.util.ArrayList[com.vividsolutions.jts.geom.Coordin
