HADOOP-9357. Revert the change r1461901 to fix TestFcHdfsSymlink failures

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1475628 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -110,9 +110,6 @@ Release 2.0.5-beta - UNRELEASED
     HADOOP-9125. LdapGroupsMapping threw CommunicationException after some
     idle time. (Kai Zheng via atm)
 
-    HADOOP-9357. Fallback to default authority if not specified in FileContext.
-    (Andrew Wang via eli)
-
     HADOOP-9429. TestConfiguration fails with IBM JAVA. (Amir Sanjar via
     suresh)
 

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

@@ -254,33 +254,17 @@ public final class FileContext {
   }
  
   /* 
-   * Resolve a relative path passed from the user.
+   * Remove relative part - return "absolute":
-   * 
+   * If input is relative path ("foo/bar") add wd: ie "/<workingDir>/foo/bar"
-   * Relative paths are resolved against the current working directory
+   * A fully qualified uri ("hdfs://nn:p/foo/bar") or a slash-relative path
-   * (e.g. "foo/bar" becomes "/<workingDir>/foo/bar").
-   * Fully-qualified URIs (e.g. "hdfs://nn:p/foo/bar") and slash-relative paths
    * ("/foo/bar") are returned unchanged.
    * 
-   * Additionally, we fix malformed URIs that specify a scheme but not an 
-   * authority (e.g. "hdfs:///foo/bar"). Per RFC 2395, we remove the scheme
-   * if it matches the default FS, and let the default FS add in the default
-   * scheme and authority later (see {@link #AbstractFileSystem#checkPath}).
-   * 
    * Applications that use FileContext should use #makeQualified() since
-   * they really want a fully-qualified URI.
+   * they really want a fully qualified URI.
    * Hence this method is not called makeAbsolute() and 
    * has been deliberately declared private.
    */
   private Path fixRelativePart(Path p) {
-    // Per RFC 2396 5.2, drop schema if there is a scheme but no authority.
-    if (p.hasSchemeAndNoAuthority()) {
-      String scheme = p.toUri().getScheme();
-      if (scheme.equalsIgnoreCase(defaultFS.getUri().getScheme())) {
-        p = new Path(p.toUri().getSchemeSpecificPart());
-      }
-    }
-    // Absolute paths are unchanged. Relative paths are resolved against the
-    // current working directory.
     if (p.isUriPathAbsolute()) {
       return p;
     } else {

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

@@ -203,10 +203,6 @@ public class Path implements Comparable {
         uri.getScheme() == null && uri.getAuthority() == null);
   }
   
-  public boolean hasSchemeAndNoAuthority() {
-    return uri.getScheme() != null && uri.getAuthority() == null;
-  }
-  
   /**
    *  True if the path component (i.e. directory) of this URI is absolute.
    */

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

@@ -21,8 +21,6 @@ package org.apache.hadoop.fs;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
-import java.net.URI;
-import java.net.URISyntaxException;
 import java.util.EnumSet;
 
 import org.apache.hadoop.HadoopIllegalArgumentException;
@@ -1167,40 +1165,6 @@ public abstract class FileContextMainOperationsBaseTest  {
     }
   }
   
-  /**
-   * Test that URIs with a scheme, no authority, and absolute path component
-   * resolve with the authority of the default FS.
-   */
-  @Test(timeout=30000)
-  public void testAbsolutePathSchemeNoAuthority() throws IOException,
-      URISyntaxException {
-    Path file = getTestRootPath(fc, "test/file");
-    createFile(file);
-    URI uri = file.toUri();
-    URI noAuthorityUri = new URI(uri.getScheme(), null, uri.getPath(),
-        uri.getQuery(), uri.getFragment());
-    Path noAuthority = new Path(noAuthorityUri);
-    Assert.assertEquals(fc.getFileStatus(file), fc.getFileStatus(noAuthority));
-  }
-
-  /**
-   * Test that URIs with a scheme, no authority, and relative path component
-   * resolve with the authority of the default FS.
-   */
-  @Test(timeout=30000)
-  public void testRelativePathSchemeNoAuthority() throws IOException,
-      URISyntaxException {
-    Path workDir = new Path(getAbsoluteTestRootPath(fc), new Path("test"));
-    fc.setWorkingDirectory(workDir);
-    Path file = new Path(workDir, "file");
-    createFile(file);
-    URI uri = file.toUri();
-    URI noAuthorityUri = new URI(uri.getScheme() + ":file");
-    System.out.println(noAuthorityUri);
-    Path noAuthority = new Path(noAuthorityUri);
-    Assert.assertEquals(fc.getFileStatus(file), fc.getFileStatus(noAuthority));
-  }
-  
   protected void createFile(Path path) throws IOException {
     FSDataOutputStream out = fc.create(path, EnumSet.of(CREATE),
         Options.CreateOpts.createParent());