From 0942954e8ab6bef636c2648d0d5a0227a50f799c Mon Sep 17 00:00:00 2001
From: Kihwal Lee <kihwal@apache.org>
Date: Tue, 17 May 2016 15:06:25 -0500
Subject: [PATCH] HDFS-10417. Improve error message from
 checkBlockLocalPathAccess. Contributed by Tianyin Xu.

---
 .../java/org/apache/hadoop/hdfs/server/datanode/DataNode.java  | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
index 288fc3eb9f..410472e69c 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
@@ -1717,7 +1717,8 @@ private void checkBlockLocalPathAccess() throws IOException {
       throw new AccessControlException(
           "Can't continue with getBlockLocalPathInfo() "
               + "authorization. The user " + currentUser
-              + " is not allowed to call getBlockLocalPathInfo");
+              + " is not configured in "
+              + DFSConfigKeys.DFS_BLOCK_LOCAL_PATH_ACCESS_USER_KEY);
     }
   }