From 6adf3c8a12a456e3aa0913620bccca2efcd138d3 Mon Sep 17 00:00:00 2001
From: yingjieMiao <yingjie@42go.com>
Date: Fri, 26 Sep 2014 18:30:15 -0700
Subject: [PATCH] [graphX] GraphOps: random pick vertex bug

---
 graphx/src/main/scala/org/apache/spark/graphx/GraphOps.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/graphx/src/main/scala/org/apache/spark/graphx/GraphOps.scala b/graphx/src/main/scala/org/apache/spark/graphx/GraphOps.scala
index 02afaa987d40d..d0dd45dba618e 100644
--- a/graphx/src/main/scala/org/apache/spark/graphx/GraphOps.scala
+++ b/graphx/src/main/scala/org/apache/spark/graphx/GraphOps.scala
@@ -254,7 +254,7 @@ class GraphOps[VD: ClassTag, ED: ClassTag](graph: Graph[VD, ED]) extends Seriali
    * Picks a random vertex from the graph and returns its ID.
    */
   def pickRandomVertex(): VertexId = {
-    val probability = 50 / graph.numVertices
+    val probability = 50.0 / graph.numVertices
     var found = false
     var retVal: VertexId = null.asInstanceOf[VertexId]
     while (!found) {