Reverting HDFS-6527 from 2.4.1. Also updating the release notes.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.4.1@1605442 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/src/main/docs/releasenotes.html

@@ -510,10 +510,6 @@ <h2>Changes since Hadoop 2.4.0</h2>
      Trivial bug reported by Todd Lipcon and fixed by Chen He <br>
      <b>docs for map output compression incorrectly reference SequenceFile</b><br>
      <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6527">HDFS-6527</a>.
-     Blocker bug reported by Kihwal Lee and fixed by Kihwal Lee <br>
-     <b>Edit log corruption due to defered INode removal</b><br>
-     <blockquote></blockquote></li>
 <li> <a href="https://issues.apache.org/jira/browse/HDFS-6411">HDFS-6411</a>.
      Major bug reported by Zhongyi Xie and fixed by Brandon Li (nfs)<br>
      <b>nfs-hdfs-gateway mount raises I/O error and hangs when a unauthorized user attempts to access it</b><br>

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

@@ -89,9 +89,6 @@ Release 2.4.1 - 2014-06-23
     HDFS-6411. nfs-hdfs-gateway mount raises I/O error and hangs when a 
     unauthorized user attempts to access it (brandonli)
 
-    HDFS-6527. Edit log corruption due to defered INode removal. (kihwal and
-    jing9 via jing9)
-
 Release 2.4.0 - 2014-04-07 
 
   INCOMPATIBLE CHANGES

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

@@ -2962,13 +2962,6 @@ private INodeFile checkLease(String src, long fileId, String holder,
           + (lease != null ? lease.toString()
               : "Holder " + holder + " does not have any open files."));
     }
-    // No further modification is allowed on a deleted file.
-    // A file is considered deleted, if it has no parent or is marked
-    // as deleted in the snapshot feature.
-    if (file.getParent() == null || (file.isWithSnapshot() &&
-        file.getFileWithSnapshotFeature().isCurrentFileDeleted())) {
-      throw new FileNotFoundException(src);
-    }
     String clientName = file.getFileUnderConstructionFeature().getClientName();
     if (holder != null && !clientName.equals(holder)) {
       throw new LeaseExpiredException("Lease mismatch on " + src + " owned by "
@@ -3378,7 +3371,6 @@ private boolean deleteInternal(String src, boolean recursive,
     getEditLog().logSync(); 
     removeBlocks(collectedBlocks); // Incremental deletion of blocks
     collectedBlocks.clear();
-
     dir.writeLock();
     try {
       dir.removeFromInodeMap(removedINodes);