HDFS-6396. Remove support for ACL feature from INodeSymlink. Contributed by Charles Lamb.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1596713 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -437,6 +437,9 @@ Release 2.5.0 - UNRELEASED
 
     HDFS-6432. Add snapshot related APIs to webhdfs. (jing9)
 
+    HDFS-6396. Remove support for ACL feature from INodeSymlink.
+    (Charles Lamb via wang)
+
   OPTIMIZATIONS
 
     HDFS-6214. Webhdfs has poor throughput for files >2GB (daryn)

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeSymlink.java

@@ -25,6 +25,7 @@ import org.apache.hadoop.fs.permission.PermissionStatus;
 import org.apache.hadoop.hdfs.DFSUtil;
 import org.apache.hadoop.hdfs.protocol.QuotaExceededException;
 import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
+import org.apache.hadoop.hdfs.server.namenode.AclFeature;
 import org.apache.hadoop.hdfs.server.namenode.XAttrFeature;
 
 /**
@@ -112,6 +113,25 @@ public class INodeSymlink extends INodeWithAdditionalFields {
     out.println();
   }
 
+  /**
+   * getAclFeature is not overridden because it is needed for resolving
+   * symlinks.
+  @Override
+  final AclFeature getAclFeature(int snapshotId) {
+    throw new UnsupportedOperationException("ACLs are not supported on symlinks");
+  }
+  */
+
+  @Override
+  public void removeAclFeature() {
+    throw new UnsupportedOperationException("ACLs are not supported on symlinks");
+  }
+
+  @Override
+  public void addAclFeature(AclFeature f) {
+    throw new UnsupportedOperationException("ACLs are not supported on symlinks");
+  }
+
   @Override
   final XAttrFeature getXAttrFeature(int snapshotId) {
     throw new UnsupportedOperationException("XAttrs are not supported on symlinks");