groupAll takes a HUGE amount of time

[pferrel]

Running on a large cluster and medium sized data (100Mb) this stage take 9.2 hours, by far the longest phase. Any ideas @laser13 @alexice ? This is not very large data and running on 4 r3.4xlarge AWS instances.

[pferrel]

here is the old implementation. Should I try putting this back in?

template-scala-parallel-universal-recommendation/src/main/scala/URModel.scala

Line 162 in 816275b

def groupAll( fields: Seq[RDD[(String, (Map[String, Any]))]]): RDD[(String, (Map[String, Any]))] = {

[alexice]

Yes, it would be good to compare total time and stage time of previous code. Looks wired. Maybe this is because of some laziness and some other calculations were attributed to this line?

On Nov 19, 2016, at 23:51 , Pat Ferrel notifications@github.com wrote:

Running on a large cluster and medium sized data (100Mb) this stage take 9.2 hours, by far the longest phase. Any ideas @laser13 @alexice ? This is not very large data and running on 4 r3.4xlarge AWS instances. We are only using popularity, no random or user-defined ranking.

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Alexey Pan'kov
e-mail: alexicep@gmail.com
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