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Vinod Kumar Vavilapalli
Arun C Murthy
Robert Joseph Evans
Vinay Kumar Thota
Joydeep Sen Sarma
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[MAPREDUCE-848] TestCapacityScheduler is failing
...Looks like the commit of HADOOP-805 broke the CapacityScheduler testcase....
, 2010-08-24, 21:15
[MAPREDUCE-773] LineRecordReader can report non-zero progress while it is processing a compressed stream
...Currently, the LineRecordReader returns 0.0 from getProgress() for most inputs (since the "end" of the filesplit is set to Long.MAX_VALUE for compressed inputs). This can be improved to retu...
, 2010-08-24, 21:14
[MAPREDUCE-717] Fix some corner case issues in speculative execution (post hadoop-2141)
...Some corner case issues can be fixed:1) Setup task should not add anything to the job statistics (since they are really fast and might affect the statistics of a job with few tasks)2) The st...
, 2010-08-24, 21:14
[MAPREDUCE-416] Move the completed jobs' history files to a DONE subdirectory inside the configured history directory
...Whenever a job completes, the history file can be moved to a directory called DONE. That would make the management of job history files easier (for example, administrators can move the histo...
, 2010-08-24, 21:13
[MAPREDUCE-95] In PipeMarRed.java, log related fields seems useless
...In PipeMapRed.java, the fields log_ & LOGNAME seems useless since they remain null throughout. It might cause issues at PipeMapRed.java:[line 352]. Also, the field mapRedKey_ in ...
, 2010-07-02, 06:24
[MAPREDUCE-222] Shuffle should be refactored to a separate task by itself
...Currently, shuffle phase is part of the reduce task. The idea here is to move out the shuffle as a first-class task. This will improve the usage of the network since we will then be able to ...
, 2009-12-01, 05:53
[MAPREDUCE-11] Cleanup JobHistory file naming to do with job recovery
...The JobTracker uses the job history files for doing job recovery upon startup. To handle cases where JobTracker goes down again while the recovered job is running, there is some logic that p...
, 2009-10-05, 06:25
[MAPREDUCE-466] The code in ReduceTask::fetchOutputs that deals with fetch failures can be refactored to a separate method
...There is big chunk of code to handle fetch failures in ReduceTask::fetchOutputs. To improve the readability of code, this should be moved out to a separate method....
, 2009-09-23, 09:16
[MAPREDUCE-240] Improve the shuffle phase by using the "connection: keep-alive" and doing batch transfers of files
...We should do transfers of map outputs at the granularity of total-bytes-transferred rather than the current way of transferring a single file and then closing the connection to the ser...
, 2009-09-11, 04:25
[MAPREDUCE-882] TestJobHistory fails sometimes
...Testcase: testDoneFolderOnHDFS took 31.892 secTestcase: testJobHistoryFile took 27.901 sec FAILEDDuplicate START_TIME seen for task task_200908161937_0001_m_000003...
, 2009-08-20, 04:18
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