Object

org.apache.spark.graphx

GraphLoader

Related Doc: package graphx

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object GraphLoader extends Logging

Provides utilities for loading Graphs from files.

Source
GraphLoader.scala
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  6. def edgeListFile(sc: SparkContext, path: String, canonicalOrientation: Boolean = false, numEdgePartitions: Int = 1, edgeStorageLevel: StorageLevel = StorageLevel.MEMORY_ONLY, vertexStorageLevel: StorageLevel = StorageLevel.MEMORY_ONLY): Graph[Int, Int]

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    Loads a graph from an edge list formatted file where each line contains two integers: a source id and a target id.

    Loads a graph from an edge list formatted file where each line contains two integers: a source id and a target id. Skips lines that begin with #.

    If desired the edges can be automatically oriented in the positive direction (source Id < target Id) by setting canonicalOrientation to true.

    sc

    SparkContext

    path

    the path to the file (e.g., /home/data/file or hdfs://file)

    canonicalOrientation

    whether to orient edges in the positive direction

    numEdgePartitions

    the number of partitions for the edge RDD Setting this value to -1 will use the default parallelism.

    edgeStorageLevel

    the desired storage level for the edge partitions

    vertexStorageLevel

    the desired storage level for the vertex partitions

    Example:
    1. Loads a file in the following format:

      # Comment Line
      # Source Id <\t> Target Id
      1   -5
      1    2
      2    7
      1    8
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