class HashPartitioner extends Partitioner
A org.apache.spark.Partitioner that implements hash-based partitioning using
Java's Object.hashCode
.
Java arrays have hashCodes that are based on the arrays' identities rather than their contents, so attempting to partition an RDD[Array[_]] or RDD[(Array[_], _)] using a HashPartitioner will produce an unexpected or incorrect result.
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- Partitioner.scala
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Instance Constructors
- new HashPartitioner(partitions: Int)
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final
def
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final
def
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final
def
eq(arg0: AnyRef): Boolean
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def
equals(other: Any): Boolean
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def
finalize(): Unit
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def
getClass(): Class[_]
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def
getPartition(key: Any): Int
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def
hashCode(): Int
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final
def
isInstanceOf[T0]: Boolean
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def
notifyAll(): Unit
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def
numPartitions: Int
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def
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