48 lines
2 KiB
Scala
48 lines
2 KiB
Scala
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package main.scala
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import org.apache.spark.SparkContext
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import org.apache.spark.SparkContext._
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import org.apache.spark.graphx._
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import org.apache.spark.rdd.RDD
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object GraphXApp {
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def main(args: Array[String]) {
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val sc = new SparkContext("local", "Simple GraphX App")
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val users: RDD[(VertexId, (String, String))] =
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sc.parallelize(Array((3L, ("rxin", "student")), (7L, ("jgonzal", "postdoc")),
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(5L, ("franklin", "prof")), (2L, ("istoica", "prof")),
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(4L, ("peter", "student"))))
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val relationships: RDD[Edge[String]] =
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sc.parallelize(Array(Edge(3L, 7L, "collab"), Edge(5L, 3L, "advisor"),
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Edge(2L, 5L, "colleague"), Edge(5L, 7L, "pi"),
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Edge(4L, 0L, "student"), Edge(5L, 0L, "colleague")))
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val defaultUser = ("John Doe", "Missing")
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val graph = Graph(users, relationships, defaultUser)
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// Notice that there is a user 0 (for which we have no information) connected to users
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// 4 (peter) and 5 (franklin).
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val triplets = graph.triplets.map(e => (e.srcAttr._1, e.dstAttr._1)).collect
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if (!triplets.exists(_ == ("peter", "John Doe"))) {
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println("Failed to run GraphX")
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System.exit(-1)
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}
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println("Test succeeded")
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}
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}
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