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Fix error in 2d Graph Partitioner #709

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Fix error in 2d Graph Partitioner #709

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4 changes: 2 additions & 2 deletions graphx/src/main/scala/org/apache/spark/graphx/PartitionStrategy.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -78,8 +78,8 @@ object PartitionStrategy {
override def getPartition(src: VertexId, dst: VertexId, numParts: PartitionID): PartitionID = {
val ceilSqrtNumParts: PartitionID = math.ceil(math.sqrt(numParts)).toInt
val mixingPrime: VertexId = 1125899906842597L
val col: PartitionID = ((math.abs(src) * mixingPrime) % ceilSqrtNumParts).toInt
val row: PartitionID = ((math.abs(dst) * mixingPrime) % ceilSqrtNumParts).toInt
val col: PartitionID = (math.abs(src * mixingPrime) % ceilSqrtNumParts).toInt
val row: PartitionID = (math.abs(dst * mixingPrime) % ceilSqrtNumParts).toInt
(col * ceilSqrtNumParts + row) % numParts
}
}
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