How to do spares vector product in Spark?

[Xi Shen]

Hi,

I have two RDD[Vector], both Vector are spares and of the form:

    (id, value)

"id" indicates the position of the value in the vector space. I want to
apply dot product on two of such RDD[Vector] and get a scale value. The
none exist values are treated as zero.

Any convenient tool to do this in Spark?


Thanks,
David