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[MAPREDUCE-863] Improve/standardize job history file content format and the management of the history files - MapReduce - [issue]
...This jira will track the various improvements that will be done in the JobHistory component of Hadoop. The main goals:1) Make the content format friendly for consumption by other apps2) Impr...
http://issues.apache.org/jira/browse/MAPREDUCE-863    Author: Devaraj Das, 2010-07-02, 00:04
[MAPREDUCE-222] Shuffle should be refactored to a separate task by itself - MapReduce - [issue]
...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 ...
http://issues.apache.org/jira/browse/MAPREDUCE-222    Author: Devaraj Das, 2009-12-01, 05:53
[MAPREDUCE-11] Cleanup JobHistory file naming to do with job recovery - MapReduce - [issue]
...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...
http://issues.apache.org/jira/browse/MAPREDUCE-11    Author: Devaraj Das, 2009-10-05, 06:25
[MAPREDUCE-466] The code in ReduceTask::fetchOutputs that deals with fetch failures can be refactored to a separate method - MapReduce - [issue]
...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....
http://issues.apache.org/jira/browse/MAPREDUCE-466    Author: Devaraj Das, 2009-09-23, 09:16
Re: [VOTE] Commit MAPREDUCE-728 to Hadoop 0.21 - MapReduce - [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...
   Author: Devaraj Das, 2009-09-22, 00:08
[MAPREDUCE-864] Enhance JobClient API implementations to look at history files to get information about jobs that are not in memory - MapReduce - [issue]
...MAPREDUCE-817 added an API to get the JobHistory URL from the JobTracker. This is useful in two ways:1) Users can use this API to get the URL, copy the history files to their local disk, and...
http://issues.apache.org/jira/browse/MAPREDUCE-864    Author: Devaraj Das, 2009-09-15, 09:30
[MAPREDUCE-240] Improve the shuffle phase by using the "connection: keep-alive" and doing batch transfers of files - MapReduce - [issue]
...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...
http://issues.apache.org/jira/browse/MAPREDUCE-240    Author: Devaraj Das, 2009-09-11, 04:25
[MAPREDUCE-882] TestJobHistory fails sometimes - MapReduce - [issue]
...Testcase: testDoneFolderOnHDFS took 31.892 secTestcase: testJobHistoryFile took 27.901 sec        FAILEDDuplicate START_TIME seen for task task_200908161937_0001_m_0...
http://issues.apache.org/jira/browse/MAPREDUCE-882    Author: Devaraj Das, 2009-08-20, 04:18
Re: New subproject logos - MapReduce - [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 ...
   Author: Devaraj Das, 2009-06-26, 11:51
[MAPREDUCE-640] Make the Reader for sampling TeraSort input multithreaded - MapReduce - [issue]
...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...
http://issues.apache.org/jira/browse/MAPREDUCE-640    Author: Devaraj Das, 2009-06-22, 15:10
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