| HADOOP-4533 | HDFS client of hadoop 0.18.1 and HDFS server 0.18.2 (0.18 branch) not compatible | Blocker | . | Runping Qi | Hairong Kuang |
| HADOOP-4526 | fsck failing with NullPointerException (return value 0) | Major | . | Koji Noguchi | Hairong Kuang |
| HADOOP-4517 | unstable dfs when running jobs on 0.18.1 | Blocker | . | Christian Kunz | Tsz Wo Nicholas Sze |
| HADOOP-4483 | getBlockArray in DatanodeDescriptor does not honor passed in maxblocks value | Critical | . | Ahad Rana | Ahad Rana |
| HADOOP-4469 | ant jar file not being included in tar distribution | Blocker | build | Nigel Daley | Nigel Daley |
| HADOOP-4467 | SerializationFactory should use current context ClassLoader | Blocker | . | Chris K Wensel | Chris K Wensel |
| HADOOP-4407 | HADOOP-4395 should use a Java 1.5 API for 0.18 | Blocker | . | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
| HADOOP-4399 | fuse-dfs per FD context is not thread safe and can cause segfaults and corruptions | Blocker | . | Pete Wyckoff | Pete Wyckoff |
| HADOOP-4395 | Reloading FSImage and FSEditLog may erase user and group information | Blocker | . | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
| HADOOP-4369 | Metric Averages are not averages | Blocker | metrics | Brian Bockelman | Brian Bockelman |
| HADOOP-4351 | ArrayIndexOutOfBoundsException during fsck | Blocker | . | Brian Bockelman | Hairong Kuang |
| HADOOP-4340 | “hadoop jar” always returns exit code 0 (success) to the shell when jar throws a fatal exception | Major | . | David Litster | Arun C Murthy |
| HADOOP-4326 | ChecksumFileSystem does not override all create(...) methods | Blocker | fs | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
| HADOOP-4314 | TestReplication fails quite often | Blocker | test | Raghu Angadi | Raghu Angadi |
| HADOOP-4292 | append() does not work for LocalFileSystem | Blocker | fs | Raghu Angadi | Hairong Kuang |
| HADOOP-4277 | Checksum verification is disabled for LocalFS | Blocker | . | Raghu Angadi | Raghu Angadi |
| HADOOP-4271 | Bug in FSInputChecker makes it possible to read from an invalid buffer | Blocker | fs | Ning Li | Ning Li |
| HADOOP-3914 | checksumOk implementation in DFSClient can break applications | Blocker | . | Christian Kunz | Christian Kunz |
| HADOOP-3786 | Changes in HOD documentation | Blocker | documentation | Suman Sehgal | Vinod Kumar Vavilapalli |
| HADOOP-3614 | TestLeaseRecovery fails when run with assertions enabled. | Blocker | . | Konstantin Shvachko | Tsz Wo Nicholas Sze |
| HADOOP-3217 | [HOD] Be less agressive when querying job status from resource manager. | Blocker | contrib/hod | Hemanth Yamijala | Hemanth Yamijala |