I'm missing something simpler (I think).  That is, why do I need a Some instead 
of Tuple2?  Because a Some might or might not be there, but a Tuple2 must be 
there?  Or something like that?

From: Adrian Mocanu 
<amoc...@verticalscope.com<mailto:amoc...@verticalscope.com>>

You are correct; the filtering I’m talking about is done implicitly. You don’t 
have to do it yourself. Spark will do it for you and remove those entries from 
the state collection.

From: Yana Kadiyska [mailto:yana.kadiy...@gmail.com]

Adrian, do you know if this is documented somewhere? I was also under the 
impression that setting a key's value to None would cause the key to be 
discarded (without any explicit filtering on the user's part) but can not find 
any official documentation to that effect

On Wed, Nov 12, 2014 at 2:43 PM, Adrian Mocanu 
<amoc...@verticalscope.com<mailto:amoc...@verticalscope.com>> wrote:
My understanding is that the reason you have an Option is so you could filter 
out tuples when None is returned. This way your state data won't grow forever.

-----Original Message-----
From: spr

After comparing with previous code, I got it work by making the return a Some 
instead of Tuple2.  Perhaps some day I will understand this.

Reply via email to