| HADOOP-6907 | Rpc client doesn’t use the per-connection conf to figure out server’s Kerberos principal | Major | ipc, security | Kan Zhang | Kan Zhang | 
| MAPREDUCE-1280 | Eclipse Plugin does not work with Eclipse Ganymede (3.4) | Major | . | Aaron Kimball | Alex Kozlov | 
| HADOOP-7190 | Put metrics v1 back into the hadoop-20-security branch | Major | metrics | Owen O’Malley | Owen O’Malley | 
| HADOOP-7232 | Fix javadoc warnings | Blocker | documentation | Owen O’Malley | Owen O’Malley | 
| HADOOP-7143 | Hive Hadoop20SShims depends on removed HadoopArchives | Major | fs | Joep Rottinghuis | Joep Rottinghuis | 
| HDFS-1822 | Editlog opcodes overlap between 20 security and later releases | Blocker | namenode | Suresh Srinivas | Suresh Srinivas | 
| HADOOP-7246 | The default log4j configuration causes warnings about EventCounter | Major | . | Owen O’Malley | Luke Lu | 
| HADOOP-7253 | Fix default config | Major | . | Owen O’Malley | Owen O’Malley | 
| HDFS-1022 | Merge under-10-min tests specs into one file | Major | test | Erik Steffl | Erik Steffl | 
| HADOOP-7259 | contrib modules should include build.properties from parent. | Major | build | Owen O’Malley | Owen O’Malley | 
| HADOOP-7215 | RPC clients must connect over a network interface corresponding to the host name in the client’s kerberos principal key | Blocker | security | Suresh Srinivas | Suresh Srinivas | 
| HADOOP-7258 | Gzip codec should not return null decompressors | Major | . | Owen O’Malley | Owen O’Malley | 
| HADOOP-5647 | TestJobHistory fails if /tmp/_logs is not writable to. Testcase should not depend on /tmp | Major | test | Ravi Gummadi | Ravi Gummadi | 
| HADOOP-7040 | DiskChecker:mkdirsWithExistsCheck swallows FileNotFoundException. | Major | . | Boris Shkolnik | Boris Shkolnik | 
| MAPREDUCE-2365 | Add counters for FileInputFormat (BYTES_READ) and FileOutputFormat (BYTES_WRITTEN) | Major | . | Owen O’Malley | Siddharth Seth | 
| HADOOP-7163 | “java.net.SocketTimeoutException: 60000 millis timeout” happens a lot | Major | ipc | Owen O’Malley | Devaraj Das | 
| HADOOP-7243 | Fix contrib unit tests (fairshare, hdfsproxy, datajoin, streaming) | Major | . | Owen O’Malley | Owen O’Malley | 
| MAPREDUCE-323 | Improve the way job history files are managed | Critical | jobtracker | Amar Kamat | Dick King | 
| MAPREDUCE-2278 | DistributedCache shouldn’t hold a ref to JobConf | Major | distributed-cache, tasktracker | Arun C Murthy | Chris Douglas | 
| MAPREDUCE-1699 | JobHistory shouldn’t be disabled for any reason | Major | jobtracker | Arun C Murthy | Krishna Ramachandran | 
| MAPREDUCE-1118 | Capacity Scheduler scheduling information is hard to read / should be tabular format | Major | capacity-sched | Allen Wittenauer | Krishna Ramachandran | 
| MAPREDUCE-1233 | Incorrect Waiting maps/reduces in Jobtracker metrics | Major | jobtracker | V.Karthikeyan | Luke Lu |