| HADOOP-7116 | raise contrib junit test jvm memory size to 512mb | Major | test | Owen O'Malley | Owen O'Malley |
| HADOOP-6928 | Fix BooleanWritable comparator in 0.20 | Major | io | Owen O'Malley | Johannes Zillmann |
| HADOOP-6923 | Native Libraries do not load if a different platform signature is returned from org.apache.hadoop.util.PlatformName | Major | native | Stephen Watt | Stephen Watt |
| HADOOP-6881 | The efficient comparators aren't always used except for BytesWritable and Text | Major | . | Owen O'Malley | Owen O'Malley |
| HADOOP-6833 | IPC leaks call parameters when exceptions thrown | Blocker | . | Todd Lipcon | Todd Lipcon |
| HADOOP-6760 | WebServer shouldn‘t increase port number in case of negative port setting caused by Jetty’s race | Major | . | Konstantin Boudnik | Konstantin Boudnik |
| HADOOP-6724 | IPC doesn't properly handle IOEs thrown by socket factory | Major | ipc | Todd Lipcon | Todd Lipcon |
| HADOOP-6702 | Incorrect exit codes for “dfs -chown”, “dfs -chgrp” when input is given in wildcard format. | Minor | fs | Ravi Phulari | Ravi Phulari |
| HDFS-1836 | Thousand of CLOSE_WAIT socket | Major | hdfs-client | Dennis Cheung | Bharath Mundlapudi |
| HDFS-1543 | Reduce dev. cycle time by moving system testing artifacts from default build and push to maven for HDFS | Major | . | Arun C Murthy | Luke Lu |
| HDFS-1406 | TestCLI fails on Ubuntu with default /etc/hosts | Minor | . | Todd Lipcon | Konstantin Boudnik |
| HDFS-1404 | TestNodeCount logic incorrect in branch-0.20 | Minor | namenode, test | Todd Lipcon | Todd Lipcon |
| HDFS-1377 | Quota bug for partial blocks allows quotas to be violated | Blocker | namenode | Eli Collins | Eli Collins |
| HDFS-1258 | Clearing namespace quota on “/” corrupts FS image | Blocker | namenode | Aaron T. Myers | Aaron T. Myers |
| HDFS-1240 | TestDFSShell failing in branch-20 | Critical | test | Todd Lipcon | Todd Lipcon |
| HDFS-1041 | DFSClient does not retry in getFileChecksum(..) | Major | hdfs-client | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
| HDFS-955 | FSImage.saveFSImage can lose edits | Blocker | namenode | Todd Lipcon | Konstantin Shvachko |
| HDFS-909 | Race condition between rollEditLog or rollFSImage ant FSEditsLog.write operations corrupts edits log | Blocker | namenode | Cosmin Lehene | Todd Lipcon |
| HDFS-908 | TestDistributedFileSystem fails with Wrong FS on weird hosts | Minor | test | Todd Lipcon | Todd Lipcon |
| HDFS-727 | bug setting block size hdfsOpenFile | Blocker | libhdfs | Eli Collins | Eli Collins |
| HDFS-15 | Rack replication policy can be violated for over replicated blocks | Critical | . | Hairong Kuang | Jitendra Nath Pandey |
| MAPREDUCE-2262 | Capacity Scheduler unit tests fail with class not found | Major | capacity-sched | Owen O'Malley | Owen O'Malley |
| MAPREDUCE-1880 | “java.lang.ArithmeticException: Non-terminating decimal expansion; no exact representable decimal result.” while running “hadoop jar hadoop-0.20.1+169.89-examples.jar pi 4 30” | Minor | examples | Victor Pakhomov | Tsz Wo Nicholas Sze |
| MAPREDUCE-1522 | FileInputFormat may change the file system of an input path | Blocker | . | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
| MAPREDUCE-1407 | Invalid example in the documentation of org.apache.hadoop.mapreduce.{Mapper,Reducer} | Trivial | documentation | Benoit Sigoure | Benoit Sigoure |
| MAPREDUCE-1372 | ConcurrentModificationException in JobInProgress | Blocker | jobtracker | Amareshwari Sriramadasu | Dick King |
| MAPREDUCE-1280 | Eclipse Plugin does not work with Eclipse Ganymede (3.4) | Major | . | Aaron Kimball | Alex Kozlov |
| MAPREDUCE-118 | Job.getJobID() will always return null | Blocker | client | Amar Kamat | Amareshwari Sriramadasu |