| HADOOP-1192 | Du command takes a noticable longer time to execute on a large dfs than the 0.11 release | Major | . | Hairong Kuang | Hairong Kuang |
| HADOOP-1191 | MapTask should wait for the status reporting thread to die before invoking the TaskUmbilicalProtocol.done(taskid) | Major | . | Devaraj Das | Doug Cutting |
| HADOOP-1179 | task Tracker should be restarted if its jetty http server cannot serve get-map-output files | Major | . | Runping Qi | Devaraj Das |
| HADOOP-1177 | Lack of logging of exceptions in MapOutputLocation.getFile | Major | . | Owen O'Malley | Devaraj Das |
| HADOOP-1175 | the user output/logs are broken from the web ui | Major | . | Owen O'Malley | Arun C Murthy |
| HADOOP-1162 | Record IO: seariliizing a byte buffer to CSV fails if buffer contains bytes less than 16. | Major | . | David Bowen | Milind Bhandarkar |
| HADOOP-1123 | LocalFileSystem gets a NullPointerException when tries to recover from ChecksumError | Major | fs | Hairong Kuang | Hairong Kuang |
| HADOOP-1105 | Reducers don't make “progress” while iterating through values | Major | . | Owen O'Malley | Owen O'Malley |