From 13d5b07eb48999a967935d6349be556f21f8db2c Mon Sep 17 00:00:00 2001
From: Ankur Dave <ankurdave@gmail.com>
Date: Wed, 4 Jun 2014 17:19:29 -0700
Subject: [PATCH] Unpersist edges of previous graph in Pregel

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

diff --git a/graphx/src/main/scala/org/apache/spark/graphx/Pregel.scala b/graphx/src/main/scala/org/apache/spark/graphx/Pregel.scala
index 4572eab2875bb..5e55620147df8 100644
--- a/graphx/src/main/scala/org/apache/spark/graphx/Pregel.scala
+++ b/graphx/src/main/scala/org/apache/spark/graphx/Pregel.scala
@@ -150,6 +150,7 @@ object Pregel extends Logging {
       oldMessages.unpersist(blocking=false)
       newVerts.unpersist(blocking=false)
       prevG.unpersistVertices(blocking=false)
+      prevG.edges.unpersist(blocking=false)
       // count the iteration
       i += 1
     }