Hi,

I want to do union of all RDDs in each window of DStream. I found Dstream.union 
and haven't seen anything like DStream.windowRDDUnion.

Is there any way around it?

I want to find mean and SD of all values which comes under each sliding window 
for which I need to union all the RDDs in each window. This is not a running 
mean and SD.

Regards,
Laeeq

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