class CoalescedPartitioner extends Partitioner
A Partitioner that might group together one or more partitions from the parent.
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Instance Constructors
- new CoalescedPartitioner(parent: Partitioner, partitionStartIndices: Array[Int])
- parent
a parent partitioner
- partitionStartIndices
indices of partitions in parent that should create new partitions in child (this should be an array of increasing partition IDs). For example, if we have a parent with 5 partitions, and partitionStartIndices is [0, 2, 4], we get three output partitions, corresponding to partition ranges [0, 1], [2, 3] and [4] of the parent partitioner.
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- def getPartition(key: Any): Int
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- def numPartitions: Int
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- CoalescedPartitioner → Partitioner
- val parent: Partitioner
- val partitionStartIndices: Array[Int]
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