HDFS-2332. Add test for HADOOP-7629 (using an immutable FsPermission object as an RPC parameter fails). Contributed by Todd Lipcon.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1176692 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -757,6 +757,9 @@ Release 0.23.0 - Unreleased
     HDFS-1217.  Change some NameNode methods from public to package private.
     (Laxman via szetszwo)
 
+    HDFS-2332. Add test for HADOOP-7629 (using an immutable FsPermission
+    object as an RPC parameter fails). (todd)
+
   OPTIMIZATIONS
 
     HDFS-1458. Improve checkpoint performance by avoiding unnecessary image

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSPermission.java

@@ -72,6 +72,7 @@ public class TestDFSPermission extends TestCase {
   final private static Path NON_EXISTENT_FILE = new Path("/NonExistentFile");
 
   private FileSystem fs;
+  private MiniDFSCluster cluster;
   private static Random r;
 
   static {
@@ -105,18 +106,25 @@ public class TestDFSPermission extends TestCase {
     }
   }
 
+  @Override
+  public void setUp() throws IOException {
+    cluster = new MiniDFSCluster.Builder(conf).numDataNodes(3).build();
+    cluster.waitActive();
+  }
+  
+  @Override
+  public void tearDown() throws IOException {
+    if (cluster != null) {
+      cluster.shutdown();
+    }
+  }
+  
   /** This tests if permission setting in create, mkdir, and 
    * setPermission works correctly
    */
   public void testPermissionSetting() throws Exception {
-    MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(3).build();
-    try {
-      cluster.waitActive();
-      testPermissionSetting(OpType.CREATE); // test file creation
-      testPermissionSetting(OpType.MKDIRS); // test directory creation
-    } finally {
-      cluster.shutdown();
-    }
+    testPermissionSetting(OpType.CREATE); // test file creation
+    testPermissionSetting(OpType.MKDIRS); // test directory creation
   }
 
   private void initFileSystem(short umask) throws Exception {
@@ -245,17 +253,22 @@ public class TestDFSPermission extends TestCase {
     }
   }
 
+  /**
+   * check that ImmutableFsPermission can be used as the argument
+   * to setPermission
+   */
+  public void testImmutableFsPermission() throws IOException {
+    fs = FileSystem.get(conf);
+
+    // set the permission of the root to be world-wide rwx
+    fs.setPermission(new Path("/"),
+        FsPermission.createImmutable((short)0777));
+  }
+  
   /* check if the ownership of a file/directory is set correctly */
   public void testOwnership() throws Exception {
-    MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(3).build();
-    try {
-      cluster.waitActive();
-      testOwnership(OpType.CREATE); // test file creation
-      testOwnership(OpType.MKDIRS); // test directory creation
-    } finally {
-      fs.close();
-      cluster.shutdown();
-    }
+    testOwnership(OpType.CREATE); // test file creation
+    testOwnership(OpType.MKDIRS); // test directory creation
   }
 
   /* change a file/directory's owner and group.
@@ -342,9 +355,7 @@ public class TestDFSPermission extends TestCase {
   /* Check if namenode performs permission checking correctly for
    * superuser, file owner, group owner, and other users */
   public void testPermissionChecking() throws Exception {
-    MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(3).build();
     try {
-      cluster.waitActive();
       fs = FileSystem.get(conf);
 
       // set the permission of the root to be world-wide rwx
@@ -401,7 +412,6 @@ public class TestDFSPermission extends TestCase {
           parentPermissions, permissions, parentPaths, filePaths, dirPaths);
     } finally {
       fs.close();
-      cluster.shutdown();
     }
   }