| HADOOP-2486 | Dropping records at reducer. InMemoryFileSystem NPE. | Blocker | . | Koji Noguchi | Devaraj Das |
| HADOOP-2460 | NameNode could delete wrong edits file when there is an error | Major | . | Raghu Angadi | dhruba borthakur |
| HADOOP-2456 | German locale makes NameNode web interface crash | Minor | . | Matthias Friedrich | Matthias Friedrich |
| HADOOP-2437 | final map output not evenly distributed across multiple disks | Blocker | . | Christian Kunz | Arun C Murthy |
| HADOOP-2422 | dfs -cat multiple files fail with ‘Unable to write to output stream.’ | Blocker | . | Koji Noguchi | Raghu Angadi |
| HADOOP-2378 | last TaskCompletionEvent gets added to the job after the job is marked as completed | Blocker | . | Alejandro Abdelnur | Devaraj Das |
| HADOOP-2246 | In CHANGES.txt, move HADOOP-1851 & HADOOP-1231 to INCOMPATIBLE CHANGES section | Blocker | documentation | Devaraj Das | Arun C Murthy |
| HADOOP-2238 | TaskGraphServlet does not set Content-Type | Major | . | Paul Saab | |
| HADOOP-2228 | Jobs fail because job.xml exists | Major | . | Johan Oskarsson | Johan Oskarsson |
| HADOOP-2227 | wrong usage of mapred.local.dir.minspacestart | Critical | . | Christian Kunz | Amareshwari Sriramadasu |
| HADOOP-2158 | hdfsListDirectory in libhdfs does not scale | Blocker | . | Christian Kunz | Christian Kunz |
| HADOOP-2129 | distcp between two clusters does not work if it is run on the target cluster | Critical | util | Murtaza A. Basrai | Doug Cutting |