|  HADOOP-520  | 
 libhdfs returns success even when writing to a file fails  | 
  Major  | 
 .  | 
 Christian Kunz  | 
 Arun C Murthy  | 
|  HADOOP-523  | 
 TextInputformat .isSplittable() fails with NullPointerException with hadoop 0.6.1  | 
  Major  | 
 .  | 
 Sanjay Dahiya  | 
 Owen O’Malley  | 
|  HADOOP-521  | 
 classloader problem for clients  | 
  Major  | 
 io  | 
 Christian Kunz  | 
 Owen O’Malley  | 
|  HADOOP-526  | 
 datanode lock message causes NullPointerException  | 
  Major  | 
 .  | 
 Owen O’Malley  | 
 Milind Bhandarkar  | 
|  HADOOP-529  | 
 SequenceFile fails task with NullPointerException in codec initialization  | 
  Blocker  | 
 .  | 
 Sanjay Dahiya  | 
 Owen O’Malley  |