1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
package spark.bagel
import org.scalatest.{FunSuite, Assertions}
import org.scalatest.prop.Checkers
import org.scalacheck.Arbitrary._
import org.scalacheck.Gen
import org.scalacheck.Prop._
import scala.collection.mutable.ArrayBuffer
import spark._
class TestVertex(val active: Boolean, val age: Int) extends Vertex with Serializable
class TestMessage(val targetId: String) extends Message[String] with Serializable
class BagelSuite extends FunSuite with Assertions {
test("halting by voting") {
val sc = new SparkContext("local", "test")
val verts = sc.parallelize(Array("a", "b", "c", "d").map(id => (id, new TestVertex(true, 0))))
val msgs = sc.parallelize(Array[(String, TestMessage)]())
val numSupersteps = 5
val result =
Bagel.run(sc, verts, msgs, sc.defaultParallelism) {
(self: TestVertex, msgs: Option[Array[TestMessage]], superstep: Int) =>
(new TestVertex(superstep < numSupersteps - 1, self.age + 1), Array[TestMessage]())
}
for ((id, vert) <- result.collect)
assert(vert.age === numSupersteps)
sc.stop()
}
test("halting by message silence") {
val sc = new SparkContext("local", "test")
val verts = sc.parallelize(Array("a", "b", "c", "d").map(id => (id, new TestVertex(false, 0))))
val msgs = sc.parallelize(Array("a" -> new TestMessage("a")))
val numSupersteps = 5
val result =
Bagel.run(sc, verts, msgs, sc.defaultParallelism) {
(self: TestVertex, msgs: Option[Array[TestMessage]], superstep: Int) =>
val msgsOut =
msgs match {
case Some(ms) if (superstep < numSupersteps - 1) =>
ms
case _ =>
Array[TestMessage]()
}
(new TestVertex(self.active, self.age + 1), msgsOut)
}
for ((id, vert) <- result.collect)
assert(vert.age === numSupersteps)
sc.stop()
}
}
|
