HADOOP-10029. Specifying har file to MR job fails in secure cluster. Contributed by Suresh Srinivas.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1531125 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/HarFileSystem.java

@@ -274,6 +274,16 @@ public class HarFileSystem extends FileSystem {
     return new Path(uri.toString());
   }
 
+  @Override
+  public Path getInitialWorkingDirectory() {
+    return getWorkingDirectory();
+  }
+
+  @Override
+  public FsStatus getStatus(Path p) throws IOException {
+    return fs.getStatus(p);
+  }
+
   /**
    * Create a har specific auth 
    * har-underlyingfs:port
@@ -296,9 +306,18 @@ public class HarFileSystem extends FileSystem {
     return auth;
   }
 
+  /**
+   * Used for delegation token related functionality. Must delegate to
+   * underlying file system.
+   */
   @Override
   protected URI getCanonicalUri() {
-    return fs.canonicalizeUri(getUri());
+    return fs.getCanonicalUri();
+  }
+
+  @Override
+  protected URI canonicalizeUri(URI uri) {
+    return fs.canonicalizeUri(uri);
   }
 
   /**
@@ -311,6 +330,16 @@ public class HarFileSystem extends FileSystem {
     return this.uri;
   }
   
+  @Override
+  protected void checkPath(Path path) {
+    fs.checkPath(path);
+  }
+
+  @Override
+  public Path resolvePath(Path p) throws IOException {
+    return fs.resolvePath(p);
+  }
+
   /**
    * this method returns the path 
    * inside the har filesystem.
@@ -676,17 +705,30 @@ public class HarFileSystem extends FileSystem {
         hstatus.getStartIndex(), hstatus.getLength(), bufferSize);
   }
 
+  /**
+   * Used for delegation token related functionality. Must delegate to
+   * underlying file system.
+   */
   @Override
-  public FSDataOutputStream create(Path f,
+  public FileSystem[] getChildFileSystems() {
-      FsPermission permission,
+    return new FileSystem[]{fs};
-      boolean overwrite,
+  }
-      int bufferSize,
+
-      short replication,
+  @Override
-      long blockSize,
+  public FSDataOutputStream create(Path f, FsPermission permission,
+      boolean overwrite, int bufferSize, short replication, long blockSize,
       Progressable progress) throws IOException {
     throw new IOException("Har: create not allowed.");
   }
 
+  @SuppressWarnings("deprecation")
+  @Override
+  public FSDataOutputStream createNonRecursive(Path f, boolean overwrite,
+      int bufferSize, short replication, long blockSize, Progressable progress)
+      throws IOException {
+    throw new IOException("Har: create not allowed.");
+  }
+
   @Override
   public FSDataOutputStream append(Path f, int bufferSize, Progressable progress) throws IOException {
     throw new IOException("Har: append not allowed.");
@@ -694,6 +736,7 @@ public class HarFileSystem extends FileSystem {
 
   @Override
   public void close() throws IOException {
+    super.close();
     if (fs != null) {
       try {
         fs.close();
@@ -781,8 +824,14 @@ public class HarFileSystem extends FileSystem {
    * not implemented.
    */
   @Override
-  public void copyFromLocalFile(boolean delSrc, Path src, Path dst) throws 
+  public void copyFromLocalFile(boolean delSrc, boolean overwrite,
-        IOException {
+      Path src, Path dst) throws IOException {
+    throw new IOException("Har: copyfromlocalfile not allowed");
+  }
+
+  @Override
+  public void copyFromLocalFile(boolean delSrc, boolean overwrite,
+      Path[] srcs, Path dst) throws IOException {
     throw new IOException("Har: copyfromlocalfile not allowed");
   }
 
@@ -822,6 +871,11 @@ public class HarFileSystem extends FileSystem {
     throw new IOException("Har: setowner not allowed");
   }
 
+  @Override
+  public void setTimes(Path p, long mtime, long atime) throws IOException {
+    throw new IOException("Har: setTimes not allowed");
+  }
+
   /**
    * Not implemented.
    */
@@ -1147,4 +1201,43 @@ public class HarFileSystem extends FileSystem {
         return size() > MAX_ENTRIES;
     }
   }
+
+  @SuppressWarnings("deprecation")
+  @Override
+  public FsServerDefaults getServerDefaults() throws IOException {
+    return fs.getServerDefaults();
+  }
+
+  @Override
+  public FsServerDefaults getServerDefaults(Path f) throws IOException {
+    return fs.getServerDefaults(f);
+  }
+
+  @Override
+  public long getUsed() throws IOException{
+    return fs.getUsed();
+  }
+
+  @SuppressWarnings("deprecation")
+  @Override
+  public long getDefaultBlockSize() {
+    return fs.getDefaultBlockSize();
+  }
+
+  @SuppressWarnings("deprecation")
+  @Override
+  public long getDefaultBlockSize(Path f) {
+    return fs.getDefaultBlockSize(f);
+  }
+
+  @SuppressWarnings("deprecation")
+  @Override
+  public short getDefaultReplication() {
+    return fs.getDefaultReplication();
+  }
+
+  @Override
+  public short getDefaultReplication(Path f) {
+    return fs.getDefaultReplication(f);
+  }
 }

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestHarFileSystem.java

@@ -18,14 +18,155 @@
 
 package org.apache.hadoop.fs;
 
-import java.io.IOException;
+import org.apache.commons.logging.Log;
-
+import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.permission.FsPermission;
+import org.apache.hadoop.security.Credentials;
+import org.apache.hadoop.security.token.Token;
+import org.apache.hadoop.util.Progressable;
 import org.junit.Assert;
-import static org.junit.Assert.*;
 import org.junit.Test;
 
+import java.io.IOException;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.util.EnumSet;
+import java.util.Iterator;
+
+import static org.apache.hadoop.fs.Options.ChecksumOpt;
+import static org.apache.hadoop.fs.Options.CreateOpts;
+import static org.apache.hadoop.fs.Options.Rename;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+@SuppressWarnings("deprecation")
 public class TestHarFileSystem {
+  public static final Log LOG = LogFactory.getLog(TestHarFileSystem.class);
+
+  /**
+   * FileSystem methods that must not be overwritten by
+   * {@link HarFileSystem}. Either because there is a default implementation
+   * already available or because it is not relevant.
+   */
+  @SuppressWarnings("deprecation")
+  private interface MustNotImplement {
+    public BlockLocation[] getFileBlockLocations(Path p, long start, long len);
+    public long getLength(Path f);
+    public FSDataOutputStream append(Path f, int bufferSize);
+    public void rename(Path src, Path dst, Rename... options);
+    public boolean exists(Path f);
+    public boolean isDirectory(Path f);
+    public boolean isFile(Path f);
+    public boolean createNewFile(Path f);
+
+    public FSDataOutputStream createNonRecursive(Path f, FsPermission permission,
+        boolean overwrite, int bufferSize, short replication, long blockSize,
+        Progressable progress) throws IOException;
+
+    public FSDataOutputStream createNonRecursive(Path f, FsPermission permission,
+        EnumSet<CreateFlag> flags, int bufferSize, short replication, long blockSize,
+        Progressable progress) throws IOException;
+
+    public FSDataOutputStream createNonRecursive(Path f, FsPermission permission,
+        EnumSet<CreateFlag> flags, int bufferSize, short replication, long blockSize,
+        Progressable progress, ChecksumOpt checksumOpt);
+
+    public boolean mkdirs(Path f);
+    public FSDataInputStream open(Path f);
+    public FSDataOutputStream create(Path f);
+    public FSDataOutputStream create(Path f, boolean overwrite);
+    public FSDataOutputStream create(Path f, Progressable progress);
+    public FSDataOutputStream create(Path f, short replication);
+    public FSDataOutputStream create(Path f, short replication,
+        Progressable progress);
+
+    public FSDataOutputStream create(Path f, boolean overwrite,
+        int bufferSize);
+
+    public FSDataOutputStream create(Path f, boolean overwrite, int bufferSize,
+        Progressable progress);
+
+    public FSDataOutputStream create(Path f, boolean overwrite, int bufferSize,
+        short replication, long blockSize);
+
+    public FSDataOutputStream create(Path f, boolean overwrite, int bufferSize,
+        short replication, long blockSize, Progressable progress);
+
+    public FSDataOutputStream create(Path f, FsPermission permission,
+        EnumSet<CreateFlag> flags, int bufferSize, short replication,
+        long blockSize, Progressable progress) throws IOException;
+
+    public FSDataOutputStream create(Path f, FsPermission permission,
+        EnumSet<CreateFlag> flags, int bufferSize, short replication,
+        long blockSize, Progressable progress, ChecksumOpt checksumOpt)
+        throws IOException;
+
+    public String getName();
+    public boolean delete(Path f);
+    public short getReplication(Path src);
+    public void processDeleteOnExit();
+    public ContentSummary getContentSummary(Path f);
+    public FsStatus getStatus();
+    public FileStatus[] listStatus(Path f, PathFilter filter);
+    public FileStatus[] listStatus(Path[] files);
+    public FileStatus[] listStatus(Path[] files, PathFilter filter);
+    public FileStatus[] globStatus(Path pathPattern);
+    public FileStatus[] globStatus(Path pathPattern, PathFilter filter);
+
+    public Iterator<LocatedFileStatus> listFiles(Path path,
+        boolean isRecursive);
+
+    public Iterator<LocatedFileStatus> listLocatedStatus(Path f);
+    public Iterator<LocatedFileStatus> listLocatedStatus(Path f,
+        PathFilter filter);
+    public void copyFromLocalFile(Path src, Path dst);
+    public void moveFromLocalFile(Path[] srcs, Path dst);
+    public void moveFromLocalFile(Path src, Path dst);
+    public void copyToLocalFile(Path src, Path dst);
+    public void copyToLocalFile(boolean delSrc, Path src, Path dst,
+        boolean useRawLocalFileSystem);
+    public void moveToLocalFile(Path src, Path dst);
+    public long getBlockSize(Path f);
+    public FSDataOutputStream primitiveCreate(Path f,
+        EnumSet<CreateFlag> createFlag, CreateOpts... opts);
+    public void primitiveMkdir(Path f, FsPermission absolutePermission,
+        boolean createParent);
+    public int getDefaultPort();
+    public String getCanonicalServiceName();
+    public Token<?> getDelegationToken(String renewer) throws IOException;
+    public boolean deleteOnExit(Path f) throws IOException;
+    public boolean cancelDeleteOnExit(Path f) throws IOException;
+    public Token<?>[] addDelegationTokens(String renewer, Credentials creds)
+        throws IOException;
+    public Path fixRelativePart(Path p);
+    public void concat(Path trg, Path [] psrcs) throws IOException;
+    public FSDataOutputStream primitiveCreate(Path f,
+        FsPermission absolutePermission, EnumSet<CreateFlag> flag, int bufferSize,
+        short replication, long blockSize, Progressable progress,
+        ChecksumOpt checksumOpt) throws IOException;
+    public boolean primitiveMkdir(Path f, FsPermission absolutePermission)
+        throws IOException;
+    public RemoteIterator<Path> listCorruptFileBlocks(Path path)
+        throws IOException;
+    public void copyFromLocalFile(boolean delSrc, Path src, Path dst)
+        throws IOException;
+    public void createSymlink(Path target, Path link, boolean createParent)
+        throws IOException;
+    public FileStatus getFileLinkStatus(Path f) throws IOException;
+    public boolean supportsSymlinks();
+    public Path getLinkTarget(Path f) throws IOException;
+    public Path resolveLink(Path f) throws IOException;
+    public void setVerifyChecksum(boolean verifyChecksum);
+    public void setWriteChecksum(boolean writeChecksum);
+    public Path createSnapshot(Path path, String snapshotName) throws
+        IOException;
+    public void renameSnapshot(Path path, String snapshotOldName,
+        String snapshotNewName) throws IOException;
+    public void deleteSnapshot(Path path, String snapshotName)
+        throws IOException;
+  }
+
   @Test
   public void testHarUri() {
     final Configuration conf = new Configuration();
@@ -44,8 +185,7 @@ public class TestHarFileSystem {
       p.getFileSystem(conf);
       Assert.fail(p + " is an invalid path.");
     } catch (IOException e) {
-      System.out.println("GOOD: Got an exception.");
+      // Expected
-      e.printStackTrace(System.out);
     }
   }
 
@@ -133,6 +273,37 @@ public class TestHarFileSystem {
       assertEquals(b[1].getOffset(), 128);
       assertEquals(b[1].getLength(), 384);
     }
+  }
 
+  @Test
+  public void testInheritedMethodsImplemented() throws Exception {
+    int errors = 0;
+    for (Method m : FileSystem.class.getDeclaredMethods()) {
+      if (Modifier.isStatic(m.getModifiers()) ||
+          Modifier.isPrivate(m.getModifiers()) ||
+          Modifier.isFinal(m.getModifiers())) {
+        continue;
+      }
+
+      try {
+        MustNotImplement.class.getMethod(m.getName(), m.getParameterTypes());
+        try {
+          HarFileSystem.class.getDeclaredMethod(m.getName(), m.getParameterTypes());
+          LOG.error("HarFileSystem MUST not implement " + m);
+          errors++;
+        } catch (NoSuchMethodException ex) {
+          // Expected
+        }
+      } catch (NoSuchMethodException exc) {
+        try {
+          HarFileSystem.class.getDeclaredMethod(m.getName(), m.getParameterTypes());
+        } catch (NoSuchMethodException exc2) {
+          LOG.error("HarFileSystem MUST implement " + m);
+          errors++;
+        }
+      }
+    }
+    assertTrue((errors + " methods were not overridden correctly - see log"),
+        errors <= 0);
   }
 }