Hi, Based on what I could see in the Spark UI, I noticed that "groupBy" transformation is quite slow (taking a lot of time) compared to other operations.
Is there any reason that groupBy is slow? shahab
Hi, Based on what I could see in the Spark UI, I noticed that "groupBy" transformation is quite slow (taking a lot of time) compared to other operations.
Is there any reason that groupBy is slow? shahab