The foreach operation on RDD has a void (Unit) return type. See attached. So there is no return value to the driver.
David "All that is gold does not glitter, Not all those who wander are lost." -------- Original Message -------- Subject: rdd.foreach return value Local Time: January 18 2016 10:34 pm UTC Time: January 19 2016 3:34 am From: charles.up...@gmail.com To: user@spark.apache.org code snippet the 'print' actually print info on the worker node, but I feel confused where the 'return' value goes to. for I get nothing on the driver node. -- -------------------------------------- a spark lover, a quant, a developer and a good man. http://github.com/litaotao
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