How to split one RDD to small ones according to its key's value

[张志强(旺轩)]

Hi everyone,

 

I am facing a requirement that I want to split one RDD into some small ones:

 

but I want to split it according to its Key element value , e.g: for those
its key is X, they gonna be in RDD1; for those its key is Y, they gonna be
in RDD2 , and so on.

 

I know it has a routine call randomSplit but I don't think it meets my need.

 

thanks for your feedback,

-Allen Zhang