My code seemed deadlock when I tried to do this:
object MoreRdd extends Serializable {
def apply(i: Int) = {
val rdd2 = sc.parallelize(0 to 10)
rdd2.map(j => i*10 + j).collect
}
}
val rdd1 = sc.parallelize(0 to 10)
val y = rdd1.map(i => MoreRdd(i)).collect
y.toString()
It never reached the last line. The code seemed deadlock somewhere since my
CPU load was quite low.
Is there a restriction not to create an RDD while another one is still
active? Is it because one worker can only handle one task? How do I work
around this?
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