From 67e2f130d02226f12e2d9f7f374e0d6f9e693793 Mon Sep 17 00:00:00 2001
From: anthony <anthony@cloud.com>
Date: Wed, 6 Jul 2011 16:07:20 -0700
Subject: [PATCH] fixed a NPE

---
 server/src/com/cloud/server/StatsCollector.java | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/server/src/com/cloud/server/StatsCollector.java b/server/src/com/cloud/server/StatsCollector.java
index fbaa4056f7e..fb9a0104c87 100755
--- a/server/src/com/cloud/server/StatsCollector.java
+++ b/server/src/com/cloud/server/StatsCollector.java
@@ -265,7 +265,10 @@ public class StatsCollector {
                 ConcurrentHashMap<Long, StorageStats> storageStats = new ConcurrentHashMap<Long, StorageStats>();
                 for (HostVO host : hosts) {
                     GetStorageStatsCommand command = new GetStorageStatsCommand(host.getStorageUrl());
-        			HostVO ssAhost = _agentMgr.getSSAgent(host);
+                    HostVO ssAhost = _agentMgr.getSSAgent(host);
+                    if (ssAhost == null) {
+                        return;
+                    }
                     long hostId = host.getId();
                     Answer answer = _agentMgr.easySend(ssAhost.getId(), command);
                     if (answer != null && answer.getResult()) {