Vinod Kumar Vavilapalli
Arun C Murthy
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Brahma Reddy Battula
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[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
[VOTE] Commit MAPREDUCE-728 to Hadoop 0.21
- [mail # dev]
...It will be nice to have this in. +1 On 9/18/09 10:24 PM, "Hong Tang" wrote: MAPREDUCE-728 could not make the code freeze deadline primarily it couples closely with JobTrac...
, 2009-09-22, 00:08
[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
New subproject logos
- [mail # dev]
...+1 On 6/26/09 12:12 PM, "Nigel Daley" wrote: Here are some logos for the new subprojects http://www.flickr.com/photos/88199325@N00/3661433605/ Please vote +1 if you ...
, 2009-06-26, 11:51
[MAPREDUCE-640] Make the Reader for sampling TeraSort input multithreaded
...The TeraSort sampler that reads from multiple splits to come up with the partition information can be made multi-threaded, where multiple threads would read from multiple splits concurrently...
, 2009-06-22, 15:10
[MAPREDUCE-414] Remove the methods controlling comparator options from the JobConf and make them static in the comparator class
...It struck me after committing HADOOP-2302 that we should ideally have the getters/setters for the comparator in the comparator class and not in the JobConf....
, 2009-06-20, 07:57
[MAPREDUCE-382] Create a test that would inject random failures for tasks in large jobs and would also inject TaskTracker failures
...Create a test that would inject random failures for tasks in large jobs and would also inject TaskTracker failures...
, 2009-06-20, 07:51
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