Use of uninitialized value in concatenation (.) or string at /mnt/hadoop-mapreduce/src/docs/changes/changes2html.pl line 142, <> line 1519. Hadoop MapReduce Change Log

Hadoop MapReduce Change Log

Release 0.21.0 - 2010-08-13

INCOMPATIBLE CHANGES (16)
1. MAPREDUCE-516. Fix the starvation problem in the Capacity Scheduler when running High RAM Jobs.
  (Arun Murthy via yhemanth)
2. MAPREDUCE-358. Change org.apache.hadoop.examples. AggregateWordCount and org.apache.hadoop.examples.AggregateWordHistogram to use new mapreduce api.
  (Amareshwari Sriramadasu via sharad)
3. MAPREDUCE-245. Change Job and jobcontrol classes to use the List interface rather than ArrayList in APIs.
  (Tom White via cdouglas)
4. MAPREDUCE-766. Enhanced list-blacklisted-trackers to display reasons for blacklisting a node.
  (Sreekanth Ramakrishnan via yhemanth)
5. MAPREDUCE-817. Add a cache for retired jobs with minimal job info and provide a way to access history file url.
  (sharad)
6. MAPREDUCE-711. Moved Distributed Cache from Common to Map/Reduce project.
  (Vinod Kumar Vavilapalli via yhemanth)
7. MAPREDUCE-895. Per the contract elucidated in HADOOP-6201, throw FileNotFoundException from FileSystem::listStatus rather than returning null.
  (Jakob Homan via cdouglas)
8. MAPREDUCE-479. Provide full task id to map output servlet rather than the reduce id, only.
  (Jiaqi Tan via cdouglas)
9. MAPREDUCE-873. Simplify job recovery. Incomplete jobs are resubmitted on jobtracker restart. Removes a public constructor in JobInProgress.
  (sharad)
10. HADOOP-6230. Moved process tree and memory calculator related classes from Common to Map/Reduce.
  (Vinod Kumar Vavilapalli via yhemanth)
11. MAPREDUCE-157. Refactor job history APIs and change the history format to JSON.
  (Jothi Padmanabhan via sharad)
12. MAPREDUCE-849. Rename configuration properties.
  (Amareshwari Sriramadasu via sharad)
13. MAPREDUCE-1287. Only call the partitioner with more than one reducer.
  (cdouglas)
14. MAPREDUCE-1385. Use the new UserGroupInformation from HADOOP-6299.
  (ddas via omalley)
15. MAPREDUCE-1493. Authorization for job-history pages.
  (vinodkv)
16. MAPREDUCE-1607. Task controller may not set permissions for a task cleanup attempt's log directory
  (Amareshwari Sriramadasu via vinodkv)
NEW FEATURES (38)
1. MAPREDUCE-1774. Large-scale Automated Framework
  (Sharad Agarwal, Sreekanth Ramakrishnan, Konstantin Boudnik, at all via cos)
2. MAPREDUCE-706. Support for FIFO pools in the fair scheduler.
  (Matei Zaharia)
3. MAPREDUCE-546. Provide sample fair scheduler config file in conf/ and use it by default if no other config file is specified.
  (Matei Zaharia)
4. MAPREDUCE-551. Preemption support in the Fair Scheduler.
  (Matei Zaharia)
5. MAPREDUCE-567. Add a new example MR that always fails.
  (Philip Zeyliger via tomwhite)
6. MAPREDUCE-211. Provides ability to run a health check script on the tasktracker nodes and blacklist nodes if they are unhealthy.
  (Sreekanth Ramakrishnan via yhemanth)
7. MAPREDUCE-637. Add an example, distbbp, which able to compute the n th bit of Pi for some large n.
  (szetszwo)
8. MAPREDUCE-532. Provide a way to limit the number of used slots per queue in the capacity scheduler.
  (Rahul Kumar Singh via yhemanth)
9. MAPREDUCE-467. Provide ability to collect statistics about total tasks and succeeded tasks in different time windows.
  (sharad)
10. MAPREDUCE-740. Log a job-summary at the end of a job, while allowing it to be configured to use a custom appender if desired.
  (acmurthy)
11. MAPREDUCE-814. Provide a way to configure completed job history files to be on HDFS.
  (sharad)
12. MAPREDUCE-800. MRUnit should support the new API.
  (Aaron Kimball via tomwhite)
13. MAPREDUCE-798. MRUnit should be able to test a succession of MapReduce passes.
  (Aaron Kimball via tomwhite)
14. MAPREDUCE-768. Provide an option to dump jobtracker configuration in JSON format to standard output.
  (V.V.Chaitanya Krishna via yhemanth)
15. MAPREDUCE-824. Add support for a hierarchy of queues in the capacity scheduler.
  (Rahul Kumar Singh via yhemanth)
16. MAPREDUCE-751. Add Rumen, a tool for extracting statistics from job tracker logs and generating job traces for simulation and analysis.
  (Dick King via cdouglas)
17. MAPREDUCE-830. Add support for splittable compression to TextInputFormats.
  (Abdul Qadeer via cdouglas)
18. MAPREDUCE-861. Add support for hierarchical queues in the Map/Reduce framework.
  (Rahul Kumar Singh via yhemanth)
19. MAPREDUCE-776. Add Gridmix, a benchmark processing Rumen traces to simulate a measured mix of jobs on a cluster.
  (cdouglas)
20. MAPREDUCE-862. Enhance JobTracker UI to display hierarchical queues.
  (V.V.Chaitanya Krishna via yhemanth)
21. MAPREDUCE-777. Brand new apis to track and query jobs as a replacement for JobClient.
  (Amareshwari Sriramadasu via acmurthy)
22. MAPREDUCE-775. Add native and streaming support for Vertica as an input or output format taking advantage of parallel read and write properties of the DBMS.
  (Omer Trajman via ddas)
23. MAPREDUCE-679. XML-based metrics as JSP servlet for JobTracker.
  (Aaron Kimball via tomwhite)
24. MAPREDUCE-980. Modify JobHistory to use Avro for serialization.
  (cutting)
25. MAPREDUCE-728. Add Mumak, a Hadoop map/reduce simulator.
  (Arun C Murthy, Tamas Sarlos, Anirban Dasgupta, Guanying Wang, and Hong Tang via cdouglas)
26. MAPREDUCE-1383. Automates fetching of delegation tokens in File*Formats Distributed Cache and Distcp. Also, provides a config mapreduce.job.hdfs-servers that the jobs can populate with a comma separated list of namenodes. The job client automatically fetches delegation tokens from those namenodes.
  (Boris Shkolnik via ddas)
27. MAPREDUCE-698. Per-pool task limits for the fair scheduler.
  (Kevin Peterson via matei)
28. MAPREDUCE-1026. Does mutual authentication of the shuffle transfers using a shared JobTracker generated key.
  (Boris Shkolnik via ddas)
29. MAPREDUCE-744. Introduces the notion of a public distributed cache.
  (Devaraj Das)
30. MAPREDUCE-1338. Introduces the notion of token cache using which tokens and secrets can be sent by the Job client to the JobTracker.
  (Boris Shkolnik via ddas)
31. HDFS-503. This patch implements an optional layer over HDFS that implements offline erasure-coding. It can be used to reduce the total storage requirements of HDFS.
  (dhruba)
32. MAPREDUCE-1432. Adds hooks in the jobtracker and tasktracker for loading the tokens in the user's ugi. This is required for the copying of files from the hdfs.
  (ddas)
33. MAPREDUCE-1335. Adds SASL Kerberos/Digest authentication in MapReduce.
  (Kan Zhang via ddas)
34. MAPREDUCE-1464. Makes a compatible change in JobTokenIdentifier to account for HADOOP-6510.
  (Jitendra Nath Pandey via ddas)
35. MAPREDUCE-1433. Add a delegation token for MapReduce.
  (omalley)
36. MAPREDUCE-1307. Introduces the Job level ACLs feature.
  (Vinod Kumar Vavilapalli via ddas)
37. MAPREDUCE-1430. JobTracker automatically renews delegation tokens for jobs.
  (Boris Shkolnik via ddas)
38. MAPREDUCE-1455. Introduces job-level authorization for mapreduce servlets.
  (Ravi Gummadi via vinodkv)
IMPROVEMENTS (161)
1. MAPREDUCE-463. Makes job setup and cleanup tasks as optional.
  (Amareshwari Sriramadasu via sharad)
2. MAPREDUCE-502. Allow jobtracker to be configured with zero completed jobs in memory.
  (Amar Kamat via sharad)
3. MAPREDUCE-416. Moves the history file to a "done" folder whenever a job completes.
  (Amar Kamat via ddas)
4. MAPREDUCE-646. Increase srcfilelist replication number in dictcp job.
  (Ravi Gummadi via szetszwo)
5. HADOOP-6106. Updated hadoop-core and test jars from hudson trunk build #12.
  (Giridharan Kesavan)
6. MAPREDUCE-642. A option to distcp that allows preserving the full source path of a file in the specified destination directory.
  (Rodrigo Schmidt via dhruba)
7. MAPREDUCE-686. Move TestSpeculativeExecution.Fake* into a separate class so that it can be used by other tests.
  (Jothi Padmanabhan via sharad)
8. MAPREDUCE-625. Modify TestTaskLimits to improve execution time.
  (Jothi Padmanabhan via sharad)
9. MAPREDUCE-465. Deprecate o.a.h.mapred.lib.MultithreadedMapRunner and add test for o.a.h.mapreduce.lib.MultithreadedMapper.
  (Amareshwari Sriramadasu via sharad)
10. MAPREDUCE-701. Improves the runtime of the TestRackAwareTaskPlacement by making it a unit test.
  (Jothi Padmanabhan via ddas)
11. MAPREDUCE-371. Change KeyFieldBasedComparator and KeyFieldBasedPartitioner to use new api.
  (Amareshwari Sriramadasu via sharad)
12. MAPREDUCE-623. Resolve javac warnings in mapreduce.
  (Jothi Padmanabhan via sharad)
13. MAPREDUCE-655. Change KeyValueLineRecordReader and KeyValueTextInputFormat to use new mapreduce api.
  (Amareshwari Sriramadasu via sharad)
14. MAPREDUCE-632. Merge TestCustomOutputCommitter with TestCommandLineJobSubmission.
  (Jothi Padmanabhan via sharad)
15. MAPREDUCE-627. Improves execution time of TestTrackerBlacklistAcrossJobs.
  (Jothi Padmanabhan via ddas)
16. MAPREDUCE-630. Improves execution time of TestKillCompletedJob.
  (Jothi Padmanabhan via ddas)
17. MAPREDUCE-626. Improves the execution time of TestLostTracker.
  (Jothi Padmanabhan via ddas)
18. MAPREDUCE-353. Makes the shuffle read and connection timeouts configurable.
  (Ravi Gummadi via ddas)
19. MAPREDUCE-739. Allow relative paths to be created in archives.
  (Mahadev Konar via cdouglas)
20. MAPREDUCE-772. Merge HADOOP-4010 changes to LineRecordReader into mapreduce package.
  (Abdul Qadeer via cdouglas)
21. MAPREDUCE-785. Separate sub-test of TestReduceFetch to be included in MR-670.
  (Jothi Padmanabhan via cdouglas)
22. MAPREDUCE-784. Modify TestUserDefinedCounters to use LocalJobRunner instead of MiniMR.
  (Jothi Padmanabhan via sharad)
23. HADOOP-6160. Fix releaseaudit target to run on specific directories.
  (gkesavan)
24. MAPREDUCE-782. Use PureJavaCrc32 in SpillRecord.
  (Todd Lipcon via szetszwo)
25. MAPREDUCE-369. Change org.apache.hadoop.mapred.lib.MultipleInputs to use new api.
  (Amareshwari Sriramadasu via sharad)
26. MAPREDUCE-373. Change org.apache.hadoop.mapred.lib.FieldSelectionMapReduce to use new api.
  (Amareshwari Sriramadasu via sharad)
27. MAPREDUCE-628. Improves the execution time of TestJobInProgress.
  (Jothi Padmanabhan via ddas)
28. MAPREDUCE-793. Creates a new test that consolidates a few tests to include in the commit-test list.
  (Jothi Padmanabhan via ddas)
29. MAPREDUCE-797. Adds combiner support to MRUnit MapReduceDriver.
  (Aaron Kimball via johan)
30. MAPREDUCE-656. Change org.apache.hadoop.mapred.SequenceFile* classes to use new mapreduce api.
  (Amareshwari Sriramadasu via sharad)
31. MAPREDUCE-670. Creates ant target for 10 mins patch test build.
  (Jothi Padmanabhan via gkesavan)
32. MAPREDUCE-375. Change org.apache.hadoop.mapred.lib.NLineInputFormat and org.apache.hadoop.mapred.MapFileOutputFormat to use new api.
  (Amareshwari Sriramadasu via ddas)
33. MAPREDUCE-779. Added node health failure counts into JobTrackerStatistics.
  (Sreekanth Ramakrishnan via yhemanth)
34. MAPREDUCE-842. Setup secure permissions for localized job files, intermediate outputs and log files on tasktrackers.
  (Vinod Kumar Vavilapalli via yhemanth)
35. MAPREDUCE-478. Allow map and reduce jvm parameters, environment variables and ulimit to be set separately. Configuration changes: add mapred.map.child.java.opts add mapred.reduce.child.java.opts add mapred.map.child.env add mapred.reduce.child.ulimit add mapred.map.child.env add mapred.reduce.child.ulimit deprecated mapred.child.java.opts deprecated mapred.child.env deprecated mapred.child.ulimit
  (acmurthy)
36. MAPREDUCE-767. Remove the dependence on the CLI 2.0 snapshot.
  (Amar Kamat via omalley)
37. MAPREDUCE-712. Minor efficiency tweaks to RandomTextWriter.
  (cdouglas)
38. MAPREDUCE-870. Remove the job retire thread and the associated config parameters.
  (sharad)
39. MAPREDUCE-874. Rename the PiEstimator example to QuasiMonteCarlo.
  (szetszwo)
40. MAPREDUCE-336. Allow logging level of map/reduce tasks to be configurable. Configuration changes: add mapred.map.child.log.level add mapred.reduce.child.log.level
  (acmurthy)
41. MAPREDUCE-355. Update mapred.join package to use the new API.
  (Amareshwari Sriramadasu via cdouglas)
42. HADOOP-6184. Updated hadoop common and test jars to get the new API in Configuration for dumping in JSON format from Hudson trunk build #68.
  (yhemanth)
43. MAPREDUCE-476. Extend DistributedCache to work locally (LocalJobRunner).
  (Philip Zeyliger via tomwhite)
44. MAPREDUCE-825. JobClient completion poll interval of 5s causes slow tests in local mode.
  (Aaron Kimball via tomwhite)
45. MAPREDUCE-910. Support counters in MRUnit.
  (Aaron Kimball via cdouglas)
46. MAPREDUCE-788. Update gridmix2 to use the new API
  (Amareshwari Sriramadasu via cdouglas)
47. MAPREDUCE-875. Make DBRecordReader execute queries lazily.
  (Aaron Kimball via enis)
48. MAPREDUCE-318. Modularizes the shuffle code.
  (Jothi Padmanabhan and Arun Murthy via ddas)
49. MAPREDUCE-936. Allow a load difference for fairshare scheduler.
  (Zheng Shao via dhruba)
50. MAPREDUCE-370. Update MultipleOutputs to use the API, merge funcitonality of MultipleOutputFormat.
  (Amareshwari Sriramadasu via cdouglas)
51. MAPREDUCE-898. Changes DistributedCache to use the new API.
  (Amareshwari Sriramadasu via ddas)
52. MAPREDUCE-144. Includes dump of the process tree in task diagnostics when a task is killed due to exceeding memory limits.
  (Vinod Kumar Vavilapalli via yhemanth)
53. MAPREDUCE-945. Modifies MRBench and TestMapRed to use ToolRunner so that options such as queue name can be passed via command line.
  (Sreekanth Ramakrishnan via yhemanth)
54. MAPREDUCE-963. Deprecate o.a.h.mapred.FileAlreadyExistsException and replace it with o.a.h.fs.FileAlreadyExistsException.
  (Boris Shkolnik via szetszwo)
55. MAPREDUCE-960. Remove an unnecessary intermediate copy and obsolete API from KeyValueLineRecordReader.
  (cdouglas)
56. MAPREDUCE-930. Modify Rumen to resolve paths in the canonical way, rather than defaulting to the local filesystem.
  (cdouglas)
57. MAPREDUCE-944. Extend the LoadManager API of the fair-share scheduler to support regulating tasks for a job based on resources currently in use by that job.
  (dhruba)
58. MAPREDUCE-973. Move FailJob and SleepJob from examples to test.
  (cdouglas via omalley)
59. MAPREDUCE-966. Modify Rumen to clean up interfaces and simplify integration with other tools.
  (Hong Tang via cdouglas)
60. MAPREDUCE-856. Setup secure permissions for distributed cache files.
  (Vinod Kumar Vavilapalli via yhemanth)
61. MAPREDUCE-885. More efficient SQL queries for DBInputFormat.
  (Aaron Kimball via enis)
62. MAPREDUCE-284. Enables ipc.client.tcpnodelay in Tasktracker's Child.
  (Ravi Gummadi via sharad)
63. MAPREDUCE-916. Split the documentation to match the project split.
  (Corinne Chandel via omalley)
64. MAPREDUCE-649. Validate a copy by comparing the source and destination checksums in distcp. Also adds an intra-task retry mechanism for errors detected during the copy.
  (Ravi Gummadi via cdouglas)
65. MAPREDUCE-654. Add a -dryrun option to distcp printing a summary of the file data to be copied, without actually performing the copy.
  (Ravi Gummadi via cdouglas)
66. MAPREDUCE-664. Display the number of files deleted by distcp when the -delete option is specified.
  (Ravi Gummadi via cdouglas)
67. MAPREDUCE-781. Let the name of distcp jobs be configurable.
  (Venkatesh S via cdouglas)
68. MAPREDUCE-975. Add an API in job client to get the history file url for a given job id.
  (sharad)
69. MAPREDUCE-905. Add Eclipse launch tasks for MapReduce.
  (Philip Zeyliger via tomwhite)
70. MAPREDUCE-277. Makes job history counters available on the job history viewers.
  (Jothi Padmanabhan via ddas)
71. MAPREDUCE-893. Provides an ability to refresh queue configuration without restarting the JobTracker.
  (Vinod Kumar Vavilapalli and Rahul Kumar Singh via yhemanth)
72. MAPREDUCE-1011. Add build.properties to svn and git ignore.
  (omalley)
73. MAPREDUCE-954. Change Map-Reduce context objects to be interfaces.
  (acmurthy)
74. MAPREDUCE-639. Change Terasort example to reflect the 2009 updates.
  (omalley)
75. MAPREDUCE-1063. Document gridmix benchmark.
  (cdouglas)
76. MAPREDUCE-931. Use built-in interpolation classes for making up task runtimes in Rumen.
  (Dick King via cdouglas)
77. MAPREDUCE-1012. Mark Context interfaces as public evolving.
  (Tom White via cdouglas)
78. MAPREDUCE-971. Document use of distcp when copying to s3, managing timeouts in particular.
  (Aaron Kimball via cdouglas)
79. HDFS-663. DFSIO for append.
  (shv)
80. HDFS-641. Move all of the components that depend on map/reduce to map/reduce.
  (omalley)
81. HADOOP-5107. Use Maven ant tasks to publish artifacts.
  (Giridharan Kesavan via omalley)
82. MAPREDUCE-1229. Allow customization of job submission policy in Mumak.
  (Hong Tang via cdouglas)
83. MAPREDUCE-1317. Reduce the memory footprint of Rumen objects by interning host Strings.
  (Hong Tang via cdouglas)
84. MAPREDUCE-1097. Add support for Vertica 3.5 to its contrib module.
  (Omer Trajman via cdouglas)
85. MAPREDUCE-1627. HadoopArchives should not uses a method in DistCp.
  (szetszwo)
86. MAPREDUCE-1198. Alternatively schedule different types of tasks in fair share scheduler.
  (Scott Chen via matei)
87. MAPREDUCE-707. Provide a jobconf property for explicitly assigning a job to a pool in the Fair Scheduler.
  (Alan Heirich via matei)
88. MAPREDUCE-947. Added commitJob and abortJob apis to OutputCommitter. Enhanced FileOutputCommitter to create a _SUCCESS file for successful jobs.
  (Amar Kamat & Jothi Padmanabhan via acmurthy)
89. MAPREDUCE-1103. Added more metrics to Jobtracker.
  (sharad)
90. MAPREDUCE-1048. Add occupied/reserved slot usage summary on jobtracker UI.
  (Amareshwari Sriramadasu and Hemanth Yamijala via sharad)
91. MAPREDUCE-1090. Modified log statement in TaskMemoryManagerThread to include task attempt id.
  (yhemanth)
92. MAPREDUCE-1189. Reduce ivy console output to ovservable level
  (cos)
93. MAPREDUCE-1167. ProcfsBasedProcessTree collects rss memory information.
  (Scott Chen via dhruba)
94. MAPREDUCE-1231. Added a new DistCp option, -skipcrccheck, so that the CRC check during setup can be skipped.
  (Jothi Padmanabhan via szetszwo)
95. MAPREDUCE-1190. Add package documentation for BBP example. (Tsz Wo (Nicholas) Sze via cdouglas)
96. MAPREDUCE-1119. When tasks fail to report status, show tasks's stack dump before killing.
  (Aaron Kimball via tomwhite)
97. MAPREDUCE-1185. Redirect running job url to history url if job is already retired.
  (Amareshwari Sriramadasu and Sharad Agarwal via sharad)
98. MAPREDUCE-1050. Introduce a mock object testing framework.
  (tomwhite)
99. MAPREDUCE-1084. Implementing aspects development and fault injeciton framework for MapReduce.
  (Sreekanth Ramakrishnan via cos)
100. MAPREDUCE-1209. Move common specific part of the test TestReflectionUtils out of mapred into common.
  (Todd Lipcon via tomwhite)
101. MAPREDUCE-967. TaskTracker does not need to fully unjar job jars.
  (Todd Lipcon via tomwhite)
102. MAPREDUCE-1083. Changes in MapReduce so that group information of users can be refreshed in the JobTracker via command line.
  (Boris Shkolnik via ddas)
103. MAPREDUCE-181. Changes the job submission process to be secure.
  (Devaraj Das)
104. MAPREDUCE-1250. Refactors the JobToken to use Common's Token interface.
  (Kan Zhang via ddas)
105. MAPREDUCE-896. Enhance tasktracker to cleanup files that might have been created by user tasks with non-writable permissions.
  (Ravi Gummadi via yhemanth)
106. MAPREDUCE-372. Change org.apache.hadoop.mapred.lib.ChainMapper/Reducer to use new mapreduce api.
  (Amareshwari Sriramadasu via sharad)
107. MAPREDUCE-1295. Add a tool in Rumen for folding and manipulating job traces.
  (Dick King via cdouglas)
108. MAPREDUCE-1302. TrackerDistributedCacheManager deletes file asynchronously, thus reducing task initialization delays.
  (Zheng Shao via dhruba)
109. MAPREDUCE-1218. TaskTrackers send cpu and memory usage of node to JobTracker.
  (Scott Chen via dhruba)
110. MAPREDUCE-847. Fix Releaseaudit warning count to zero
  (Giridharan Kesavan)
111. MAPREDUCE-1337. Use generics in StreamJob to improve readability of that class.
  (Kay Kay via cdouglas)
112. MAPREDUCE-361. Port terasort example to the new mapreduce API.
  (Amareshwari Sriramadasu via cdouglas)
113. MAPREDUCE-1367. LocalJobRunner should support parallel mapper execution.
  (Aaron Kimball via tomwhite)
114. MAPREDUCE-64. Eliminate io.sort.record.percent from MapTask configuration.
  (cdouglas)
115. MAPREDUCE-1440. Replace the long user name in MapReduce with the local name.
  (omalley)
116. MAPREDUCE-1470. Move delegation tokens from HDFS to Common so that MapReduce can use them too.
  (omalley)
117. MAPREDUCE-1425. Reduce memory usage by archive.
  (mahadev via szetszwo)
118. MAPREDUCE-1441. Trim whitespace from directory lists pulled from the configuration.
  (Todd Lipcon via cdouglas)
119. MAPREDUCE-1309. Refactor Rumen trace generator to improve code structure and add extensible support for log formats.
  (Dick King via cdouglas)
120. MAPREDUCE-1503. Delegation token renewing and cancelling should provide meaningful exceptions when there are failures instead of returning false.
  (omalley)
121. HADOOP-6579. Upgrade commons-codec library to 1.4.
  (omalley)
122. MAPREDUCE-1423. Improve performance of CombineFileInputFormat when multiple pools are configured.
  (Dhruba Borthakur via zshao)
123. MAPREDUCE-1454. Quote user supplied strings in Tracker servlets.
  (cdouglas)
124. MAPREDUCE-1408. Add customizable job submission policies to Gridmix.
  (Rahul Singh via cdouglas)
125. MAPREDUCE-1527. Better warning logged when mapred.queue.names is overshadowed by mapred-queues.xml.
  (Hong Tang via acmurthy)
126. MAPREDUCE-1403. Save the size and number of distributed cache artifacts in the configuration.
  (Arun Murthy via cdouglas)
127. MAPREDUCE-1482. Truncate state string and diagnostic information in TaskStatus.
  (Amar Kamat via szetszwo)
128. MAPREDUCE-1593. [Rumen] Improvements to random seed generation
  (tamas via mahadev)
129. MAPREDUCE-1460. Oracle support in DataDrivenDBInputFormat.
  (Aaron Kimball via tomwhite)
130. MAPREDUCE-1569. Pass configuration through mocked contexts in MRUnit.
  (Chris White via cdouglas)
131. MAPREDUCE-1590. Move HarFileSystem from Hadoop Common to Mapreduce tools.
  (mahadev)
132. MAPREDUCE-1629. Get rid of fakeBlockLocations() on HarFileSystem, since it's not used
  (mahadev)
133. MAPREDUCE-1489. DataDrivenDBInputFormat should not query the database when generating only one split.
  (Aaron Kimball via tomwhite)
134. MAPREDUCE-1514. Add documentation on replication, permissions, new options, limitations and internals of har.
  (mahadev via szetszwo)
135. MAPREDUCE-1428. Make block size and the size of archive created files configurable.
  (mahadev via szetszwo)
136. MAPREDUCE-1656. JobStory should provide queue info.
  (hong via mahadev)
137. MAPREDUCE-1466. Record number of files processed in FileInputFormat in the Configuration for offline analysis.
  (Luke Lu and Arun Murthy via cdouglas)
138. MAPREDUCE-1538. TrackerDistributedCacheManager manages the number of files.
  (Scott Chen via dhruba)
139. MAPREDUCE-1673. Scripts to start and stop RaidNode.
  (Rodrigo Schmidt via dhruba)
140. MAPREDUCE-1659. RaidNode writes temp files on configured tmp directory and add random numbers to their names to avoid conflicts
  (Rodrigo Schmidt via dhruba)
141. MAPREDUCE-1221. Allow admins to control physical memory limits per-task and per-node.
  (Scott Chen via acmurthy)
142. MAPREDUCE-1065. Update mapred tutorial to use the new API.
  (Aaron Kimball via cdouglas)
143. MAPREDUCE-1304. Add a task counter tracking time spent in GC.
  (Aaron Kimball via cdouglas)
144. MAPREDUCE-1570. Add grouping comparators to MRUnit.
  (Chris White via cdouglas)
145. MAPREDUCE-1650. Exclude Private elements from generated MapReduce Javadoc.
  (tomwhite)
146. MAPREDUCE-1625. Improve grouping of packages in Javadoc.
  (tomwhite)
147. MAPREDUCE-1417. Forrest documentation should be updated to reflect the changes in MAPREDUCE-744.
  (Ravi Gummadi via vinodkv)
148. MAPREDUCE-1568. TrackerDistributedCacheManager should clean up cache in a background thread.
  (Scott Chen via zshao)
149. MAPREDUCE-1749. Move configuration strings out of JobContext so that it can be made public stable.
  (omalley)
150. MAPREDUCE-1747. Remove documentation for the 'unstable' job-acls feature. This thus removes the incompatible change/feature job-acls from branch 0.21
  (vinodkv)
151. MAPREDUCE-1623. Apply audience and stability notations to Hadoop Map-Reduce.
  (tomwhite via acmurthy)
152. MAPREDUCE-1751. Change MapReduce to depend on Hadoop 'common' artifacts instead of 'core'.
  (tomwhite)
153. MAPREDUCE-1535. Replace usage of FileStatus#isDir().
  (Eli Collins via tomwhite)
154. MAPREDUCE-1832. Allow file sizes less than 1MB in DFSIO benchmark.
  (shv)
155. MAPREDUCE-1404. Move Cluster-Setup and Single-Node-Setup Docs from MapReduce to Common.
  (tomwhite)
156. MAPREDUCE-1697. Document the behavior of -file option and deprecate it in favour of -files option in streaming.
  (Amareshwari Sriramadasu via vinodkv)
157. MAPREDUCE-1033. Resolve location of scripts and configuration files after project split.
  (tomwhite)
158. MAPREDUCE-1018. Document changes to the memory management and scheduling model.
  (Hemanth Yamijala via vinodkv)
159. MAPREDUCE-1735. Un-deprecate the old MapReduce API in the 0.21 branch.
  (tomwhite)
160. MAPREDUCE-1896. [Herriot] New property for multi user list.
  (Vinay Thota via cos)
161. MAPREDUCE-1812. New properties for suspend and resume process.
  (Vinay Thota via cos)
OPTIMIZATIONS (7)
1. MAPREDUCE-270. Fix the tasktracker to optionally send an out-of-band heartbeat on task-completion for better job-latency. (acmurthy) Configuration changes: add mapreduce.tasktracker.outofband.heartbeat
2. MAPREDUCE-1186. Modified code in distributed cache to set permissions only on required set of localized paths.
  (Amareshwari Sriramadasu via yhemanth)
3. MAPREDUCE-1501. FileInputFormat supports multi-level, recursive directory listing.
  (Zheng Shao via dhruba)
4. MAPREDUCE-1556. upgrade to Avro 1.3.0.
  (cutting via tomwhite)
5. MAPREDUCE-1613. Install/deploy source jars to Maven repo
  (Patrick Angeles via ddas)
6. MAPREDUCE-1610. Forrest documentation should be updated to reflect the changes in MAPREDUCE-856.
  (Ravi Gummadi via vinodkv)
7. MAPREDUCE-1853. Adds caching for TaskAttemptContext in MultipleOutputs.
  (Torsten Curdt via amareshwari)
BUG FIXES (266)
1. MAPREDUCE-1845. FairScheduler.tasksToPreempt() can return negative number.
  (Scott Chen via matei)
2. MAPREDUCE-878. Rename fair scheduler design doc to fair-scheduler-design-doc.tex and add Apache license header
  (matei)
3. HADOOP-4687. MapReduce is split from Hadoop Core. It is a subproject under Hadoop
  (Owen O'Malley)
4. HADOOP-6096. Fix Eclipse project and classpath files following project split.
  (tomwhite)
5. MAPREDUCE-419. Reconcile mapred.userlog.limit.kb defaults in configuration and code.
  (Philip Zeyliger via cdouglas)
6. MAPREDUCE-2. Fixes a bug in KeyFieldBasedPartitioner in handling empty keys.
  (Amar Kamat via sharad)
7. MAPREDUCE-130. Delete the jobconf copy from the log directory of the JobTracker when the job is retired.
  (Amar Kamat via sharad)
8. MAPREDUCE-657. Fix hardcoded filesystem problem in CompletedJobStatusStore.
  (Amar Kamat via sharad)
9. MAPREDUCE-179. Update progress in new RecordReaders.
  (cdouglas)
10. MAPREDUCE-658. Replace NPE in distcp with a meaningful error message when the source path does not exist.
  (Ravi Gummadi via cdouglas)
11. MAPREDUCE-671. Update ignore list to include untracked, generated build artifacts and config files.
  (cdouglas)
12. MAPREDUCE-433. Use more reliable counters in TestReduceFetch.
  (cdouglas)
13. MAPREDUCE-124. Fix a bug in failure handling of abort task of OutputCommiter.
  (Amareshwari Sriramadasu via sharad)
14. MAPREDUCE-694. Fix to add jsp-api jars to capacity-scheduler classpath.
  (Giridharan Kesavan)
15. MAPREDUCE-702. Fix eclipse-plugin jar target
  (Giridharan Kesavan)
16. MAPREDUCE-522. Replace TestQueueCapacities with simpler test case to test integration between capacity scheduler and MR framework.
  (Sreekanth Ramakrishnan via yhemanth)
17. MAPREDUCE-683. Fixes an initialization problem in the JobHistory. The initialization of JobHistoryFilesManager is now done in the JobHistory.init call.
  (Amar Kamat via ddas)
18. MAPREDUCE-708. Fixes a bug to allow updating the reason for blacklisting a node on the JobTracker UI.
  (Sreekanth Ramakrishnan via yhemanth)
19. MAPREDUCE-709. Fixes message displayed for a blacklisted node where the reason for blacklisting is due to the health check script timing out.
  (Sreekanth Ramakrishnan via yhemanth)
20. MAPREDUCE-676. Existing diagnostic rules fail for MAP ONLY jobs.
  (Suhas Gogate via tomwhite)
21. MAPREDUCE-722. Fixes a bug with tasktracker reservations for high memory jobs in capacity scheduler.
  (Vinod Kumar Vavilapalli via yhemanth)
22. HADOOP-6090. Updates gridmix script to use new mapreduce api output format.
  (Amareshwari Sriramadasu via sharad)
23. MAPREDUCE-732. Removed spurious log statements in the node blacklisting logic.
  (Sreekanth Ramakrishnan via yhemanth)
24. MAPREDUCE-734. Fix a ConcurrentModificationException in unreserving unused reservations for a job when it completes.
  (Arun Murthy and Sreekanth Ramakrishnan via yhemanth)
25. MAPREDUCE-733. Fix a RuntimeException while unreserving trackers that are blacklisted for a job.
  (Arun Murthy and Sreekanth Ramakrishnan via yhemanth)
26. MAPREDUCE-677. Fix timeout in TestNodeRefresh.
  (Amar Kamat via sharad)
27. MAPREDUCE-153. Fix timeout in TestJobInProgressListener.
  (Amar Kamat via sharad)
28. MAPREDUCE-742. Fix output messages and java comments in the Pi related examples.
  (szetszwo)
29. MAPREDUCE-565. Fix partitioner to work with new API.
  (Owen O'Malley via cdouglas)
30. MAPREDUCE-680. Fix so MRUnit can handle reuse of Writable objects.
  (Aaron Kimball via johan)
31. MAPREDUCE-18. Puts some checks for cross checking whether a reduce task gets the correct shuffle data.
  (Ravi Gummadi via ddas)
32. MAPREDUCE-771. Fix scheduling of setup and cleanup tasks to use free slots instead of tasks for scheduling.
  (yhemanth)
33. MAPREDUCE-717. Fixes some corner case issues in speculative execution heuristics.
  (Devaraj Das)
34. MAPREDUCE-716. Make DBInputFormat work with Oracle.
  (Aaron Kimball via tomwhite)
35. MAPREDUCE-735. Fixes a problem in the KeyFieldHelper to do with the end index for some inputs
  (Amar Kamat via ddas)
36. MAPREDUCE-682. Removes reservations on tasktrackers which are blacklisted.
  (Sreekanth Ramakrishnan via yhemanth)
37. MAPREDUCE-743. Fixes a problem to do with progress reporting in the map phase.
  (Ravi Gummadi via ddas)
38. MAPREDUCE-765. Eliminate the deprecated warnings introduced by H-5438.
  (He Yongqiang via szetszwo)
39. MAPREDUCE-383. Fix a bug in Pipes combiner due to bytes count not getting reset after the spill.
  (Christian Kunz via sharad)
40. MAPREDUCE-809. Fix job-summary logs to correctly record status of FAILED and KILLED jobs.
  (acmurthy)
41. MAPREDUCE-792. Fix unchecked warnings in DBInputFormat.
  (Aaron Kimball via szetszwo)
42. MAPREDUCE-760. Fix a timing issue in TestNodeRefresh.
  (Amar Kamat via sharad)
43. MAPREDUCE-40. Keep memory management backwards compatible for job configuration parameters and limits.
  (Rahul Kumar Singh via yhemanth)
44. MAPREDUCE-587. Fixes a OOM issue in TestStreamingExitStatus.
  (Amar Kamat via ddas)
45. MAPREDUCE-408. Fixes an assertion problem in TestKillSubProcesses
  (Ravi Gummadi via ddas)
46. MAPREDUCE-659. Fix gridmix2 compilation.
  (Giridharan Kesavan)
47. MAPREDUCE-796. Fixes a ClassCastException in an exception log in MultiThreadedMapRunner.
  (Amar Kamat via ddas)
48. MAPREDUCE-808. Fixes a serialization problem in TypedBytes.
  (Klaas Bosteels via ddas)
49. MAPREDUCE-845. Fix a findbugs heap size problem in build.xml and add a new property findbugs.heap.size.
  (Lee Tucker via szetszwo)
50. MAPREDUCE-838. Fixes a problem in the way commit of task outputs happens. The bug was that even if commit failed, the task would be declared as successful.
  (Amareshwari Sriramadasu via ddas)
51. MAPREDUCE-813. Updates Streaming and M/R tutorial documents.
  (Corinne Chandel via ddas)
52. MAPREDUCE-805. Fixes some deadlocks in the JobTracker due to the fact the JobTracker lock hierarchy wasn't maintained in some JobInProgress method calls.
  (Amar Kamat via ddas)
53. MAPREDUCE-799. Fixes so all of the MRUnit self-tests run.
  (Aaron Kimball via johan)
54. MAPREDUCE-848. Fixes a problem to do with TestCapacityScheduler failing
  (Amar Kamat via ddas)
55. MAPREDUCE-840. DBInputFormat leaves open transaction.
  (Aaron Kimball via tomwhite)
56. MAPREDUCE-859. Adds Avro and its dependencies required by Hadoop common.
  (Ravi Gummadi via sharad)
57. MAPREDUCE-867. Fix ivy conf to look for avro jar from maven repo.
  (Giridharan Kesavan)
58. MAPREDUCE-877. Added avro as a dependency to contrib ivy settings. (Tsz Wo (Nicholas) Sze via yhemanth)
59. MAPREDUCE-852. In build.xml, remove the Main-Class, which is incorrectly set in tools, and rename the target "tools-jar" to "tools".
  (szetszwo)
60. MAPREDUCE-773. Sends progress reports for compressed gzip inputs in maps. Fixes a native direct buffer leak in LineRecordReader classes.
  (Hong Tang and ddas)
61. MAPREDUCE-832. Reduce number of warning messages printed when deprecated memory variables are used.
  (Rahul Kumar Singh via yhemanth)
62. MAPREDUCE-745. Fixes a testcase problem to do with generation of JobTracker IDs.
  (Amar Kamat via ddas)
63. MAPREDUCE-834. Enables memory management on tasktrackers when old memory management parameters are used in configuration.
  (Sreekanth Ramakrishnan via yhemanth)
64. MAPREDUCE-818. Fixes Counters#getGroup API.
  (Amareshwari Sriramadasu via sharad)
65. MAPREDUCE-807. Handles the AccessControlException during the deletion of mapred.system.dir in the JobTracker. The JobTracker will bail out if it encounters such an exception.
  (Amar Kamat via ddas)
66. MAPREDUCE-430. Fix a bug related to task getting stuck in case of OOM error.
  (Amar Kamat via ddas)
67. MAPREDUCE-871. Fix ownership of Job/Task local files to have correct group ownership according to the egid of the tasktracker.
  (Vinod Kumar Vavilapalli via yhemanth)
68. MAPREDUCE-911. Fix a bug in TestTaskFail related to speculative execution.
  (Amareshwari Sriramadasu via sharad)
69. MAPREDUCE-687. Fix an assertion in TestMiniMRMapRedDebugScript.
  (Amareshwari Sriramadasu via sharad)
70. MAPREDUCE-924. Fixes the TestPipes testcase to use Tool.
  (Amareshwari Sriramadasu via sharad)
71. MAPREDUCE-903. Add Avro jar to eclipse classpath.
  (Philip Zeyliger via tomwhite)
72. MAPREDUCE-943. Removes a testcase in TestNodeRefresh that doesn't make sense in the new Job recovery model.
  (Amar Kamat via ddas)
73. MAPREDUCE-764. TypedBytesInput's readRaw() does not preserve custom type codes.
  (Klaas Bosteels via tomwhite)
74. HADOOP-6243. Fixes a NullPointerException in handling deprecated keys.
  (Sreekanth Ramakrishnan via yhemanth)
75. MAPREDUCE-968. NPE in distcp encountered when placing _logs directory on S3FileSystem.
  (Aaron Kimball via tomwhite)
76. MAPREDUCE-826. harchive doesn't use ToolRunner / harchive returns 0 even if the job fails with exception
  (koji Noguchi via mahadev)
77. MAPREDUCE-839. unit test TestMiniMRChildTask fails on mac os-x
  (hong tang via mahadev)
78. MAPREDUCE-112. Add counters for reduce input, output records to the new API.
  (Jothi Padmanabhan via cdouglas)
79. MAPREDUCE-648. Fix two distcp bugs: (1) it should not launch a job if all src paths are directories, and (2) it does not skip copying when updating a single file.
  (Ravi Gummadi via szetszwo)
80. MAPREDUCE-946. Fix a regression in LineRecordReader where the maxBytesToConsume parameter is not set correctly.
  (cdouglas)
81. MAPREDUCE-977. Missing jackson jars from Eclipse template.
  (tomwhite)
82. MAPREDUCE-988. Fix a packaging issue in the contrib modules.
  (Hong Tang via cdouglas)
83. MAPREDUCE-971. distcp does not always remove distcp.tmp.dir.
  (Aaron Kimball via tomwhite)
84. MAPREDUCE-995. Fix a bug in JobHistory where tasks completing after the job is closed cause a NPE.
  (Jothi Padmanabhan via cdouglas)
85. MAPREDUCE-953. Fix QueueManager to dump queue configuration in JSON format.
  (V.V. Chaitanya Krishna via yhemanth)
86. MAPREDUCE-645. Prevent distcp from running a job when the destination is a file, but the source is not.
  (Ravi Gummadi via cdouglas)
87. MAPREDUCE-1002. Flushed writer in JobQueueClient so queue information is printed correctly.
  (V.V. Chaitanya Krishna via yhemanth)
88. MAPREDUCE-1003. Fix compilation problem in eclipse plugin when eclipse.home is set.
  (Ravi Gummadi via yhemanth)
89. MAPREDUCE-941. Vaidya script fails on Solaris.
  (Chad Metcalf via tomwhite)
90. MAPREDUCE-912. Add and standardize Apache license headers.
  (Chad Metcalf via cdouglas)
91. MAPREDUCE-1022. Fix compilation of vertica testcases.
  (Vinod Kumar Vavilapalli via acmurthy)
92. MAPREDUCE-1000. Handle corrupt history files in JobHistory.initDone().
  (Jothi Padmanabhan via sharad)
93. MAPREDUCE-1028. Fixed number of slots occupied by cleanup tasks to one irrespective of slot size for the job.
  (Ravi Gummadi via yhemanth)
94. MAPREDUCE-964. Fixed start and finish times of TaskStatus to be consistent, thereby fixing inconsistencies in metering tasks.
  (Sreekanth Ramakrishnan via yhemanth)
95. MAPREDUCE-1076. Deprecate ClusterStatus and add javadoc in ClusterMetrics.
  (Amareshwari Sriramadasu via sharad)
96. MAPREDUCE-979. Fixed JobConf APIs related to memory parameters to return values of new configuration variables when deprecated variables are disabled.
  (Sreekanth Ramakrishnan via yhemanth)
97. MAPREDUCE-1030. Modified scheduling algorithm to return a map and reduce task per heartbeat in the capacity scheduler.
  (Rahul Kumar Singh via yhemanth)
98. MAPREDUCE-1071. Use DataInputStream rather than FSDataInputStream in the JobHistory EventReader.
  (Hong Tang via cdouglas)
99. MAPREDUCE-986. Fix Rumen to work with truncated task lines.
  (Dick King via cdouglas)
100. MAPREDUCE-1029. Fix failing TestCopyFiles by restoring the unzipping of HDFS webapps from the hdfs jar.
  (Aaron Kimball and Jothi Padmanabhan via cdouglas)
101. MAPREDUCE-769. Make findbugs and javac warnings to zero.
  (Amareshwari Sriramadasu via sharad)
102. MAPREDUCE-1104. Initialize RecoveryManager in JobTracker cstr called by Mumak.
  (Hong Tang via cdouglas)
103. MAPREDUCE-1061. Add unit test validating byte specifications for gridmix jobs.
  (cdouglas)
104. MAPREDUCE-1077. Fix Rumen so that truncated tasks do not mark the job as successful.
  (Dick King via cdouglas)
105. MAPREDUCE-1041. Make TaskInProgress::taskStatuses map package-private.
  (Jothi Padmanabhan via cdouglas)
106. MAPREDUCE-1070. Prevent a deadlock in the fair scheduler servlet.
  (Todd Lipcon via cdouglas)
107. MAPREDUCE-1086. Setup Hadoop logging environment for tasks to point to task related parameters.
  (Ravi Gummadi via yhemanth)
108. MAPREDUCE-1105. Remove max limit configuration in capacity scheduler in favor of max capacity percentage thus allowing the limit to go over queue capacity.
  (Rahul Kumar Singh via yhemanth)
109. MAPREDUCE-1016. Make the job history log format JSON.
  (cutting)
110. MAPREDUCE-1038. Weave Mumak aspects only if related files have changed.
  (Aaron Kimball via cdouglas)
111. MAPREDUCE-1163. Remove unused, hard-coded paths from libhdfs.
  (Allen Wittenauer via cdouglas)
112. MAPREDUCE-962. Fix a NullPointerException while killing task process trees.
  (Ravi Gummadi via yhemanth)
113. MAPREDUCE-1177. Correct setup/cleanup inversion in JobTracker::getTaskReports.
  (Vinod Kumar Vavilapalli via cdouglas)
114. MAPREDUCE-1178. Fix ClassCastException in MultipleInputs by adding a DelegatingRecordReader.
  (Amareshwari Sriramadasu and Jay Booth via sharad)
115. MAPREDUCE-1068. Fix streaming job to show proper message if file is is not present.
  (Amareshwari Sriramadasu via sharad)
116. MAPREDUCE-1147. Add map output counters to new API.
  (Amar Kamat via cdouglas)
117. MAPREDUCE-915. The debug scripts are run as the job user.
  (ddas)
118. MAPREDUCE-1007. Fix NPE in CapacityTaskScheduler.getJobs().
  (V.V.Chaitanya Krishna via sharad)
119. MAPREDUCE-28. Refactor TestQueueManager and fix default ACLs.
  (V.V.Chaitanya Krishna and Rahul K Singh via sharad)
120. MAPREDUCE-1182. Fix overflow in reduce causing allocations to exceed the configured threshold.
  (cdouglas)
121. MAPREDUCE-1239. Fix contrib components build dependencies.
  (Giridharan Kesavan and omalley)
122. MAPREDUCE-787. Fix JobSubmitter to honor user given symlink path.
  (Amareshwari Sriramadasu via sharad)
123. MAPREDUCE-1249. Update config default value for socket read timeout to match code default.
  (Amareshwari Sriramadasu via cdouglas)
124. MAPREDUCE-1161. Remove ineffective synchronization in NotificationTestCase.
  (Owen O'Malley via cdouglas)
125. MAPREDUCE-1244. Fix eclipse-plugin's build dependencies.
  (gkesavan)
126. MAPREDUCE-1075. Fix JobTracker to not throw an NPE for a non-existent queue.
  (V.V.Chaitanya Krishna via yhemanth)
127. MAPREDUCE-754. Fix NPE in expiry thread when a TT is lost.
  (Amar Kamat via sharad)
128. MAPREDUCE-1074. Document Reducer mark/reset functionality.
  (Jothi Padmanabhan via cdouglas)
129. MAPREDUCE-1267. Fix typo in mapred-default.xml.
  (Todd Lipcon via cdouglas)
130. MAPREDUCE-952. Remove inadvertently reintroduced Task.Counter enum.
  (Jothi Padmanabhan via cdouglas)
131. MAPREDUCE-1230. Fix handling of null records in VerticaInputFormat.
  (Omer Trajman via cdouglas)
132. MAPREDUCE-1171. Allow shuffle retries and read-error reporting to be configurable.
  (Amareshwari Sriramadasu via acmurthy)
133. MAPREDUCE-879. Fix broken unit test TestTaskTrackerLocalization on MacOS.
  (Sreekanth Ramakrishnan via yhemanth)
134. MAPREDUCE-1124. Fix imprecise byte counts in Gridmix.
  (cdouglas)
135. MAPREDUCE-1222. Add an option to exclude numeric IP addresses in topologies processed by Mumak.
  (Hong Tang via cdouglas)
136. MAPREDUCE-1284. Fix fts_open() call in task-controller that was failing LinuxTaskController unit tests.
  (Ravi Gummadi via yhemanth)
137. MAPREDUCE-1143. Fix running task counters to be updated correctly when speculative attempts are running for a TIP.
  (Rahul Kumar Singh via yhemanth)
138. MAPREDUCE-1241. Use a default queue configuration in JobTracker when mapred-queues.xml is unavailable.
  (Todd Lipcon via cdouglas)
139. MAPREDUCE-1301. Fix set up of permission checking script used in localization tests.
  (Amareshwari Sriramadasu via yhemanth)
140. MAPREDUCE-1286. Remove quoting from client opts in TaskRunner.
  (Yuri Pradkin via cdouglas)
141. MAPREDUCE-1059. Use distcp.bytes.per.map when adding sync markers in distcp.
  (Aaron Kimball via cdouglas)
142. MAPREDUCE-1009. Update forrest documentation describing hierarchical queues.
  (Vinod Kumar Vavilapalli via yhemanth)
143. MAPREDUCE-1342. Fixed deadlock in global blacklisting of tasktrackers.
  (Amareshwari Sriramadasu via acmurthy)
144. MAPREDUCE-1316. Fixes a memory leak of TaskInProgress instances in the jobtracker.
  (Amar Kamat via yhemanth)
145. MAPREDUCE-1359. TypedBytes TestIO doesn't mkdir its test dir first.
  (Anatoli Fomenko via cos)
146. MAPREDUCE-1314. Correct errant mapreduce.x.mapreduce.x replacements from bulk change.
  (Amareshwari Sriramadasu via cdouglas)
147. MAPREDUCE-1365. Restore accidentally renamed test in TestTaskTrackerBloacklisting.
  (Amareshwari Sriramadasu via cdouglas)
148. MAPREDUCE-1406. Fix spelling of JobContext.MAP_COMBINE_MIN_SPILLS.
  (cdouglas)
149. MAPREDUCE-1369. JUnit tests should never depend on anything in conf
  (Anatoli Fomenko via cos)
150. MAPREDUCE-1412. Fix timer granularity issue causing failures in TestTaskTrackerBlacklisting.
  (cdouglas)
151. MAPREDUCE-1448. Respect --config option in Mumak script.
  (Hong Tang via cdouglas)
152. MAPREDUCE-1251. c++ utils doesn't compile.
  (Eli Collins via tomwhite)
153. MAPREDUCE-1522. FileInputFormat may use the default FileSystem for the input path. (Tsz Wo (Nicholas), SZE via cdouglas)
154. MAPREDUCE-1407. Update javadoc in mapreduce.{Mapper,Reducer} to match actual usage.
  (Benoit Sigoure via cdouglas)
155. MAPREDUCE-1258. Fix fair scheduler event log not logging job info.
  (matei)
156. MAPREDUCE-1089. Fix NPE in fair scheduler preemption when tasks are scheduled but not running.
  (Todd Lipcon via matei)
157. MAPREDUCE-1014. Fix the libraries for common and hdfs.
  (omalley)
158. MAPREDUCE-1111. JT Jetty UI not working if we run mumak.sh off packaged distribution directory.
  (hong tang via mahadev)
159. MAPREDUCE-1133. Eclipse .classpath template has outdated jar files and is missing some new ones.
  (cos)
160. MAPREDUCE-1098. Fixed the distributed-cache to not do i/o while holding a global lock.
  (Amareshwari Sriramadasu via acmurthy)
161. MAPREDUCE-1158. Fix JT running maps and running reduces metrics.
  (sharad)
162. MAPREDUCE-1160. Reduce verbosity of log lines in some Map/Reduce classes to avoid filling up jobtracker logs on a busy cluster.
  (Ravi Gummadi and Hong Tang via yhemanth)
163. MAPREDUCE-1153. Fix tasktracker metrics when trackers are decommissioned.
  (sharad)
164. MAPREDUCE-1128. Fix MRUnit to prohibit iterating over values twice.
  (Aaron Kimball via cdouglas)
165. MAPREDUCE-665. Move libhdfs to HDFS subproject.
  (Eli Collins via dhruba)
166. MAPREDUCE-1196. Fix FileOutputCommitter to use the deprecated cleanupJob api correctly.
  (acmurthy)
167. MAPREDUCE-1244. Fix eclipse-plugin's build dependencies.
  (gkesavan)
168. MAPREDUCE-1140. Fix DistributedCache to not decrement reference counts for unreferenced files in error conditions.
  (Amareshwari Sriramadasu via yhemanth)
169. MAPREDUCE-1245. Fix TestFairScheduler failures by instantiating lightweight Jobtracker.
  (sharad)
170. MAPREDUCE-1260. Update Eclipse configuration to match changes to Ivy configuration.
  (Edwin Chan via cos)
171. MAPREDUCE-1152. Distinguish between failed and killed tasks in JobTrackerInstrumentation.
  (Sharad Agarwal via cdouglas)
172. MAPREDUCE-1285. In DistCp.deleteNonexisting(..), get class from the parameter instead of using FileStatus.class.
  (Peter Romianowski via szetszwo)
173. MAPREDUCE-1294. Build fails to pull latest hadoop-core-* artifacts
  (cos)
174. MAPREDUCE-1213. TaskTrackers restart is faster because it deletes distributed cache directory asynchronously.
  (Zheng Shao via dhruba)
175. MAPREDUCE-1265. The task attempt error log prints the name of the tasktracker machine.
  (Scott Chen via dhruba)
176. MAPREDUCE-1201. ProcfsBasedProcessTree collects CPU usage information.
  (Scott Chen via dhruba)
177. MAPREDUCE-1326. fi tests don't use fi-site.xml
  (cos)
178. MAPREDUCE-1165. Replace non-portable function name with C99 equivalent.
  (Allen Wittenauer via cdouglas)
179. MAPREDUCE-1331. Fixes a typo in a testcase
  (Devaraj Das)
180. MAPREDUCE-1293. AutoInputFormat doesn't work with non-default FileSystems.
  (Andrew Hitchcock via tomwhite)
181. MAPREDUCE-1131. Using profilers other than hprof can cause JobClient to report job failure.
  (Aaron Kimball via tomwhite)
182. MAPREDUCE-1155. Streaming tests swallow exceptions.
  (Todd Lipcon via tomwhite)
183. MAPREDUCE-1212. Mapreduce contrib project ivy dependencies are not included in binary target.
  (Aaron Kimball via tomwhite)
184. MAPREDUCE-1388. Move the HDFS RAID package from HDFS to MAPREDUCE.
  (Eli Collins via dhruba)
185. MAPREDUCE-1322. Defines default value for staging directory to be user based fixing a failing streaming test.
  (Devaraj Das and Amareshwari Sriramadasu via yhemanth)
186. MAPREDUCE-899. Modified LinuxTaskController to check that task-controller has right permissions and ownership before performing any actions.
  (Amareshwari Sriramadasu via yhemanth)
187. MAPREDUCE-1443. DBInputFormat can leak connections.
  (Aaron Kimball via tomwhite)
188. MAPREDUCE-1457. Fixes JobTracker to get the FileSystem object within getStagingAreaDir within a privileged block. Fixes Child.java to use the appropriate UGIs while getting the TaskUmbilicalProtocol proxy and while executing the task.
  (Jakob Homan via ddas)
189. MAPREDUCE-1399. The archive command shows a null error message
  (nicholas via mahadev)
190. MAPREDUCE-1305. Improve efficiency of distcp -delete.
  (Peter Romianowski via cdouglas)
191. MAPREDUCE-1474. Update forrest documentation for Hadoop Archives.
  (Mahadev Konar via cdouglas)
192. MAPREDUCE-1400. Use tr rather than sed to effect literal substitution in the build script.
  (Allen Wittenauer via cdouglas)
193. MAPREDUCE-1358. Avoid false positives in OutputLogFilter.
  (Todd Lipcon via cdouglas)
194. MAPREDUCE-1490. Fix a NullPointerException that could occur during instantiation and initialization of the DistributedRaidFileSystem.
  (Rodrigo Schmidt via dhruba)
195. MAPREDUCE-1476. Fix the M/R framework to not call commit for special tasks like job setup/cleanup and task cleanup.
  (Amareshwari Sriramadasu via yhemanth)
196. MAPREDUCE-1398. Fix TaskLauncher to stop waiting for slots on a TIP that is killed / failed.
  (Amareshwari Sriramadasu via yhemanth)
197. MAPREDUCE-1491. The parity files created by the RAID are combined using Hadoop Archive Files (HAR).
  (Rodrigo Schmidt via dhruba)
198. MAPREDUCE-1378. URL encode link in jobhistory.jsp to avoid errors caused by unescaped characters.
  (E. Sammer via cdouglas)
199. MAPREDUCE-1519. RaidNode fails to create new parity file if an older version already exists.
  (Rodrigo Schmidt via dhruba)
200. MAPREDUCE-1537. Fixes a compilation problem in a testcase after commit HDFS-984.
  (Jitendra Nath Pandey via ddas)
201. MAPREDUCE-1537. The patch makes the job client call the getDelegationToken only when security is enabled.
  (Jitendra Nath Pandey via ddas)
202. MAPREDUCE-1510. RAID should regenerate parity files if they get deleted.
  (Rodrigo Schmidt via dhruba)
203. MAPREDUCE-1421. Fix the LinuxTaskController tests failing on trunk after the commit of MAPREDUCE-1385.
  (Amareshwari Sriramadasu via vinodkv)
204. MAPREDUCE-1520. Fix TestMiniMRLocalFS failure caused by regression in getting user working dir.
  (Amareshwari Sriramadasu via cdouglas)
205. MAPREDUCE-1512. RAID uses HarFileSystem directly instead of FileSystem.get
  (Rodrigo Schmidt via dhruba)
206. MAPREDUCE-1435. Fix symlink handling in task work directory when cleaning up, essentially to avoid following links.
  (Ravi Gummadi via yhemanth)
207. MAPREDUCE-1518. RaidNode does not run the deletion check on the directory that stores the parity files.
  (Rodrigo Schmidt via dhruba)
208. MAPREDUCE-1573. TestStreamingAsDifferentUser fails if run as tt_user.
  (Ravi Gummadi via vinodkv)
209. MAPREDUCE-927. Cleanup of task-logs should happen in TaskTracker instead of the Child.
  (Amareshwari Sriramadasu via vinodkv)
210. MAPREDUCE-1578. Decouple HadoopArchives vesrion from HarFileSystem version.
  (Rodrigo Schmidt via szetszwo)
211. MAPREDUCE-1422. Fix cleanup of localized job directory to work if files with non-deletable permissions are created within it.
  (Amar Kamat via yhemanth)
212. MAPREDUCE-1306. Randomize the arrival of heartbeat responses in Mumak.
  (Tamas Sarlos via cdouglas)
213. MAPREDUCE-1579. archive: check and possibly replace the space charater in source paths.
  (szetszwo)
214. MAPREDUCE-1536. DataDrivenDBInputFormat does not split date columns correctly.
  (Aaron Kimball via enis)
215. MAPREDUCE-890. After HADOOP-4491, the user who started mapred system is not able to run job.
  (Ravi Gummadi via vinodkv)
216. MAPREDUCE-1615. Fix compilation of TestSubmitJob.
  (cdouglas)
217. MAPREDUCE-1508. Protect against NPE in TestMultipleLevelCaching.
  (Aaron Kimball via cdouglas)
218. MAPREDUCE-1497. Suppress spurious findbugs warning about IndexCache synchronization.
  (Amareshwari Sriramadasu via cdouglas)
219. MAPREDUCE-1420. Fix TestTTResourceReporting failure.
  (Scott Chen via cdouglas)
220. MAPREDUCE-1480. Correctly initialize child RecordReaders in CombineFileInputFormat.
  (Aaron Kimball via cdouglas)
221. MAPREDUCE-1348. Fix block forensics packaging.
  (Tom White via cdouglas)
222. MAPREDUCE-1628. HarFileSystem shows incorrect replication numbers and permissions.
  (szetszwo via mahadev)
223. MAPREDUCE-1602. Fix the error message for the case that src does not exist.
  (szetszwo)
224. MAPREDUCE-1585. Create Hadoop Archives version 2 with filenames URL-encoded
  (rodrigo via mahadev)
225. MAPREDUCE-1523. Sometimes rumen trace generator fails to extract the job finish time.
  (dick king via mahadev)
226. MAPREDUCE-1635. ResourceEstimator does not work after MAPREDUCE-842.
  (Amareshwari Sriramadasu via vinodkv)
227. MAPREDUCE-889. binary communication formats added to Streaming by HADOOP-1722 should be documented.
  (Klaas Bosteels via tomwhite)
228. MAPREDUCE-1031. ant tar target doens't seem to compile tests in contrib projects.
  (Aaron Kimball via tomwhite)
229. MAPREDUCE-1692. Removed unused testcase TestStreamedMerge.
  (Sreekanth Ramakrishnan and Amareshwari Sriramadasu via yhemanth)
230. MAPREDUCE-1062. Fix ReliabilityTest to work with retired jobs.
  (Sreekanth Ramakrishnan via cdouglas)
231. MAPREDUCE-1409. IOExceptions thrown from FIleOutputCommitter::abortTask should cause the task to fail.
  (Amareshwari Sriramadasu via cdouglas)
232. MAPREDUCE-1695. Include capacity scheduler in findbugs and javadoc-dev targets and also fix existing warnings.
  (Hong Tang via yhemanth)
233. MAPREDUCE-1494. Ensure TestJobDirCleanup verifies the correct paths.
  (Amareshwari Sriramadasu via cdouglas)
234. MAPREDUCE-1622. Include missing slf4j dependencies.
  (cdouglas)
235. MAPREDUCE-1515. Accept java5.home from build.properties, not only from the command line when building forrest docs.
  (Al Thompson via cdouglas)
236. MAPREDUCE-1618. Add missing javadoc to JobStatus::*JobAcls.
  (Amareshwari Sriramadasu via cdouglas)
237. MAPREDUCE-1219. Remove job level metrics from jobtracker metrics to ease undue load on jobtracker.
  (Sreekanth Ramakrishnan via sharad)
238. MAPREDUCE-1604. Add Forrest documentation for Job ACLs.
  (Amareshwari Sriramadasu via yhemanth)
239. MAPREDUCE-1705. Archiving and Purging of HDFS parity files should handle globbed policies accurately.
  (Rodrigo Schmidt via dhruba)
240. MAPREDUCE-1612. job conf file is not accessible from job history web page.
  (Ravi Gummadi and Sreekanth Ramakrishnan via vinodkv)
241. MAPREDUCE-1397. NullPointerException observed during task failures.
  (Amareshwari Sriramadasu via vinodkv)
242. MAPREDUCE-1728. Oracle timezone strings do not match Java.
  (Aaron Kimball via tomwhite)
243. MAPREDUCE-1609. TaskTracker.localizeJob should not set permissions on job log directory recursively.
  (Amareshwari Sriramadasu via vinodkv)
244. MAPREDUCE-1657. After task logs directory is deleted, tasklog servlet displays wrong error message about job ACLs.
  (Ravi Gummadi via vinodkv)
245. MAPREDUCE-1727. TestJobACLs fails after HADOOP-6686.
  (Ravi Gummadi via vinodkv)
246. MAPREDUCE-1611. Refresh nodes and refresh queues doesnt work with service authorization enabled.
  (Amar Kamat via vinodkv)
247. MAPREDUCE-1276. Correct flaws in the shuffle related to connection setup and failure attribution.
  (Amareshwari Sriramadasu via cdouglas)
248. MAPREDUCE-1810. Fix references to 0.22 in 0.21 branch.
  (tomwhite)
249. MAPREDUCE-1372. ConcurrentModificationException in JobInProgress.
  (Dick King and Amareshwari Sriramadasu via tomwhite)
250. MAPREDUCE-118. Fix Job.getJobID().
  (Amareshwari Sriramadasu via sharad)
251. MAPREDUCE-913. TaskRunner crashes with NPE resulting in held up slots, UNINITIALIZED tasks and hung TaskTracker.
  (Amareshwari Sriramadasu and Sreekanth Ramakrishnan via vinodkv)
252. MAPREDUCE-1725. Fix MapReduce API incompatibilities between 0.20 and 0.21.
  (tomwhite)
253. MAPREDUCE-1606. TestJobACLs may timeout as there are no slots for launching JOB_CLEANUP task.
  (Ravi Gummadi via vinodkv)
254. MAPREDUCE-1765. Correct streaming documentation for StreamXmlRecordReader.
  (Corinne Chandel via amareshwari)
255. MAPREDUCE-1880. Fix BigDecimal.divide(..) in the pi example.
  (szetszwo)
256. MAPREDUCE-1885. Revert FileSystem create method that takes CreateFlags (MapReduce part of HADOOP-6826).
  (Ravi Gummadi via tomwhite)
257. MAPREDUCE-1870. Harmonize MapReduce JAR library versions with Common and HDFS.
  (tomwhite)
258. MAPREDUCE-1791. Remote cluster control functionality needs JavaDocs improvement
  (Konstantin Boudnik)
259. MAPREDUCE-1942. 'compile-fault-inject' should never be called directly.
  (Konstantin Boudnik)
260. MAPREDUCE-1876. Fixes TaskAttemptStartedEvent to correctly log event type for all task types.
  (Amar Kamat via amareshwari)
261. MAPREDUCE-1926. MapReduce distribution is missing build-utils.xml.
  (tomwhite)
262. MAPREDUCE-1920. Enables completed jobstatus store by default.
  (Tom White via amareshwari)
263. MAPREDUCE-2012. Some contrib tests fail in branch 0.21 and trunk.
  (Amareshwari Sriramadasu via tomwhite)
264. MAPREDUCE-1980. Fixes TaskAttemptUnsuccessfulCompletionEvent and TaskAttemptFinishedEvent to correctly log event type for all task types.
  (Amar Kamat via amareshwari)
265. MAPREDUCE-2014. Remove task-controller from 0.21 branch
  (tomwhite)
266. MAPREDUCE-1856. Extract a subset of tests for smoke (DOA) validation
  (cos)