From 1df1391cca5a05984c8077820c270f4b156ecb85 Mon Sep 17 00:00:00 2001
From: Suresh Srinivas <suresh@apache.org>
Date: Mon, 5 Aug 2013 17:49:07 +0000
Subject: [PATCH] HDFS-5061. Merge 1510611 from trunk

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1510626 13f79535-47bb-0310-9956-ffa450edef68
---
 hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt                    | 3 +++
 .../org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java   | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index a08daf5ee9f..998e6ee0196 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -58,6 +58,9 @@ Release 2.1.1-beta - UNRELEASED
     HDFS-4513. Clarify in the WebHDFS REST API that all JSON respsonses may
     contain additional properties.  (szetszwo)
 
+    HDFS-5061. Make FSNameSystem#auditLoggers an unmodifiable list. 
+    (Arpit Agarwal via suresh)
+
   OPTIMIZATIONS
 
   BUG FIXES
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
index 015befd259f..20993a7cbc1 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
@@ -759,7 +759,7 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
     if (auditLoggers.isEmpty()) {
       auditLoggers.add(new DefaultAuditLogger());
     }
-    return auditLoggers;
+    return Collections.unmodifiableList(auditLoggers);
   }
 
   void loadFSImage(StartupOption startOpt, FSImage fsImage, boolean haEnabled)