Hi,
Is the following guaranteed to always provide an exact count?
foreachRDD(foreachFunc = rdd = {
rdd.count()
In the literature it mentions However, output operations (like foreachRDD)
have *at-least once* semantics, that is, the transformed data may get
written to an external entity more
Hi Josh,
The count() call will result in the correct number in each RDD, however
foreachRDD doesn't return the result of its computation anywhere (its
intended for things which cause side effects, like updating an accumulator
or causing an web request), you might want to look at transform or the
