Revert HADOOP-9877 because of breakage reported in HADOOP-9912

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1520713 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -357,8 +357,6 @@ Release 2.3.0 - UNRELEASED
     HADOOP-9865.  FileContext#globStatus has a regression with respect to
     relative path.  (Chuan Lin via Colin Patrick McCabe)
 
-    HADOOP-9877. Fix listing of snapshot directories in globStatus.
-    (Binglin Chang via Andrew Wang)
 
     HADOOP-9909. org.apache.hadoop.fs.Stat should permit other LANG.
     (Shinichi Yamashita via Andrew Wang)

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

@@ -62,18 +62,6 @@ class Globber {
     }
   }
 
-  private FileStatus getFileLinkStatus(Path path) {
-    try {
-      if (fs != null) {
-        return fs.getFileLinkStatus(path);
-      } else {
-        return fc.getFileLinkStatus(path);
-      }
-    } catch (IOException e) {
-      return null;
-    }
-  }
-
   private FileStatus[] listStatus(Path path) {
     try {
       if (fs != null) {
@@ -134,18 +122,6 @@ class Globber {
     return authority ;
   }
 
-  /**
-   * The glob filter builds a regexp per path component.  If the component
-   * does not contain a shell metachar, then it falls back to appending the
-   * raw string to the list of built up paths.  This raw path needs to have
-   * the quoting removed.  Ie. convert all occurrences of "\X" to "X"
-   * @param name of the path component
-   * @return the unquoted path component
-   */
-  private static String unquotePathComponent(String name) {
-    return name.replaceAll("\\\\(.)", "$1");
-  }
-
   public FileStatus[] glob() throws IOException {
     // First we get the scheme and authority of the pattern that was passed
     // in.
@@ -210,30 +186,14 @@ class Globber {
               resolvedCandidate.isDirectory() == false) {
             continue;
           }
-          // For components without pattern, we get its FileStatus directly
-          // using getFileLinkStatus for two reasons:
-          // 1. It should be faster to only get FileStatus needed rather than
-          //    get all children.
-          // 2. Some special filesystem directories (e.g. HDFS snapshot
-          //    directories) are not returned by listStatus, but do exist if
-          //    checked explicitly via getFileLinkStatus.
-          if (globFilter.hasPattern()) {
-            FileStatus[] children = listStatus(candidate.getPath());
-            for (FileStatus child : children) {
-              // Set the child path based on the parent path.
-              // This keeps the symlinks in our path.
-              child.setPath(new Path(candidate.getPath(),
-                      child.getPath().getName()));
-              if (globFilter.accept(child.getPath())) {
-                newCandidates.add(child);
-              }
-            }
-          } else {
-            Path p = new Path(candidate.getPath(), unquotePathComponent(component));
-            FileStatus s = getFileLinkStatus(p);
-            if (s != null) {
-              s.setPath(p);
-              newCandidates.add(s);
+          FileStatus[] children = listStatus(candidate.getPath());
+          for (FileStatus child : children) {
+            // Set the child path based on the parent path.
+            // This keeps the symlinks in our path.
+            child.setPath(new Path(candidate.getPath(),
+                    child.getPath().getName()));
+            if (globFilter.accept(child.getPath())) {
+              newCandidates.add(child);
             }
           }
         }

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

@@ -30,7 +30,6 @@ import org.apache.hadoop.fs.Options.Rename;
 import org.apache.hadoop.fs.permission.FsPermission;
 import org.junit.After;
 import org.junit.Assert;
-import org.junit.Assume;
 import org.junit.Before;
 import org.junit.Test;
 
@@ -633,20 +632,6 @@ public abstract class FileContextMainOperationsBaseTest  {
         filteredPaths));
   }
   
-  protected Path getHiddenPathForTest() {
-    return null;
-  }
-  
-  @Test
-  public void testGlobStatusFilterWithHiddenPathTrivialFilter()
-      throws Exception {
-    Path hidden = getHiddenPathForTest();
-    Assume.assumeNotNull(hidden);
-    FileStatus[] filteredPaths = fc.util().globStatus(hidden, DEFAULT_FILTER);
-    Assert.assertNotNull(filteredPaths);
-    Assert.assertEquals(1, filteredPaths.length);
-  }
-
   @Test
   public void testWriteReadAndDeleteEmptyFile() throws Exception {
     writeReadAndDelete(0);

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

@@ -517,26 +517,6 @@ public class TestFsShellReturnCode {
       }
       return stat;
     }
-
-    @Override
-    public FileStatus getFileLinkStatus(Path p) throws IOException {
-      String f = makeQualified(p).toString();
-      FileStatus stat = super.getFileLinkStatus(p);
-      
-      stat.getPermission();
-      if (owners.containsKey(f)) {
-        stat.setOwner("STUB-"+owners.get(f));      
-      } else {
-        stat.setOwner("REAL-"+stat.getOwner());
-      }
-      if (groups.containsKey(f)) {
-        stat.setGroup("STUB-"+groups.get(f));      
-      } else {
-        stat.setGroup("REAL-"+stat.getGroup());
-      }
-      return stat;
-    }
-
   }
   
   static class MyFsShell extends FsShell {

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/fs/TestHDFSFileContextMainOperations.java

@@ -59,9 +59,6 @@ public class TestHDFSFileContextMainOperations extends
     defaultWorkingDirectory = fc.makeQualified( new Path("/user/" + 
         UserGroupInformation.getCurrentUser().getShortUserName()));
     fc.mkdir(defaultWorkingDirectory, FileContext.DEFAULT_PERM, true);
-    // Make defaultWorkingDirectory snapshottable to enable 
-    // testGlobStatusFilterWithHiddenPathTrivialFilter
-    cluster.getFileSystem().allowSnapshot(defaultWorkingDirectory);
   }
 
   private static void restartCluster() throws IOException, LoginException {
@@ -76,9 +73,6 @@ public class TestHDFSFileContextMainOperations extends
     defaultWorkingDirectory = fc.makeQualified( new Path("/user/" + 
         UserGroupInformation.getCurrentUser().getShortUserName()));
     fc.mkdir(defaultWorkingDirectory, FileContext.DEFAULT_PERM, true);
-    // Make defaultWorkingDirectory snapshottable to enable 
-    // testGlobStatusFilterWithHiddenPathTrivialFilter
-    cluster.getFileSystem().allowSnapshot(defaultWorkingDirectory);
   }
       
   @AfterClass
@@ -98,11 +92,6 @@ public class TestHDFSFileContextMainOperations extends
     super.tearDown();
   }
 
-  @Override
-  protected Path getHiddenPathForTest() {
-    return new Path(defaultWorkingDirectory, ".snapshot");
-  }
-  
   @Override
   protected Path getDefaultWorkingDirectory() {
     return defaultWorkingDirectory;