From ac35ee9393e0afce9fede1d2052e7bf4032312fd Mon Sep 17 00:00:00 2001
From: Brahma Reddy Battula <brahma@apache.org>
Date: Thu, 27 Oct 2016 20:20:56 +0530
Subject: [PATCH] HDFS-10455. Logging the username when deny the setOwner
 operation. Contributed by Tianyin Xiu

---
 .../org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java
index 417ce017ac..488c600bb1 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAttrOp.java
@@ -84,10 +84,12 @@ static HdfsFileStatus setOwner(
       fsd.checkOwner(pc, iip);
       if (!pc.isSuperUser()) {
         if (username != null && !pc.getUser().equals(username)) {
-          throw new AccessControlException("Non-super user cannot change owner");
+          throw new AccessControlException("User " + pc.getUser()
+              + " is not a super user (non-super user cannot change owner).");
         }
         if (group != null && !pc.isMemberOfGroup(group)) {
-          throw new AccessControlException("User does not belong to " + group);
+          throw new AccessControlException(
+              "User " + pc.getUser() + " does not belong to " + group);
         }
       }
       unprotectedSetOwner(fsd, iip, username, group);