class MLPairRDDFunctions[K, V] extends Serializable
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- def topByKey(num: Int)(implicit ord: Ordering[V]): RDD[(K, Array[V])]
Returns the top k (largest) elements for each key from this RDD as defined by the specified implicit Ordering[T].
Returns the top k (largest) elements for each key from this RDD as defined by the specified implicit Ordering[T]. If the number of elements for a certain key is less than k, all of them will be returned.
- num
k, the number of top elements to return
- ord
the implicit ordering for T
- returns
an RDD that contains the top k values for each key
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- Deprecated
(Since version 9)