diff --git a/conf/xlearning-site.xml b/conf/xlearning-site.xml
index 6022912..798378d 100644
--- a/conf/xlearning-site.xml
+++ b/conf/xlearning-site.xml
@@ -53,5 +53,9 @@
         <name>xlearning.history.webapp.https.port</name>
         <value>19885</value>
     </property>
+    <property>
+        <name>ipc.client.fallback-to-simple-auth-allowed</name>
+        <value>true</value>
+    </property>
 </configuration>
 
diff --git a/src/main/java/net/qihoo/xlearning/conf/XLearningConfiguration.java b/src/main/java/net/qihoo/xlearning/conf/XLearningConfiguration.java
index 4305f05..ffc4341 100644
--- a/src/main/java/net/qihoo/xlearning/conf/XLearningConfiguration.java
+++ b/src/main/java/net/qihoo/xlearning/conf/XLearningConfiguration.java
@@ -166,6 +166,7 @@ public XLearningConfiguration(Configuration conf) {
   public static final String DEFAULT_XLEARNING_INTERRESULT_DIR = "/interResult_";
 
   public static final String[] DEFAULT_XLEARNING_APPLICATION_CLASSPATH = {
+      "$HADOOP_CONF_DIR",
       "$HADOOP_COMMON_HOME/share/hadoop/common/*",
       "$HADOOP_COMMON_HOME/share/hadoop/common/lib/*",
       "$HADOOP_HDFS_HOME/share/hadoop/hdfs/*",