From e2378a4496f37e35fbbc3e4a6db24e009179aff0 Mon Sep 17 00:00:00 2001
From: Li Zhihui <zhihui.li@intel.com>
Date: Thu, 31 Jul 2014 14:27:30 +0800
Subject: [PATCH] Fix conflict between code and doc in
 YarnClientSchedulerBackend.scala

---
 .../scheduler/cluster/YarnClientSchedulerBackend.scala      | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/yarn/common/src/main/scala/org/apache/spark/scheduler/cluster/YarnClientSchedulerBackend.scala b/yarn/common/src/main/scala/org/apache/spark/scheduler/cluster/YarnClientSchedulerBackend.scala
index f8fb96b312f23..048f39f1c7302 100644
--- a/yarn/common/src/main/scala/org/apache/spark/scheduler/cluster/YarnClientSchedulerBackend.scala
+++ b/yarn/common/src/main/scala/org/apache/spark/scheduler/cluster/YarnClientSchedulerBackend.scala
@@ -42,10 +42,10 @@ private[spark] class YarnClientSchedulerBackend(
 
   private[spark] def addArg(optionName: String, envVar: String, sysProp: String,
       arrayBuf: ArrayBuffer[String]) {
-    if (System.getenv(envVar) != null) {
-      arrayBuf += (optionName, System.getenv(envVar))
-    } else if (sc.getConf.contains(sysProp)) {
+    if (sc.getConf.contains(sysProp)) {
       arrayBuf += (optionName, sc.getConf.get(sysProp))
+    } else if (System.getenv(envVar) != null) {
+      arrayBuf += (optionName, System.getenv(envVar))
     }
   }