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[MAPREDUCE-29] JVM reuse across task types - MapReduce - [issue]
...Currently, JVM-reuse is across tasks of same type of the same job, i.e. JVMs are kind of marked as map-JVMs and reduce JVMs. May be we can reuse JVMs across tasks of different types but of t...
http://issues.apache.org/jira/browse/MAPREDUCE-29    Author: Vinod Kumar Vavilapalli, 2011-12-31, 09:12
[MAPREDUCE-22] Per task memory usage stats from TaskMemoryManager on mapred web ui - MapReduce - [issue]
...It would be good to have per-task memory usage statistics from the TaskMemoryManager displayed on the web ui  as the task progresses on. This would make it easy for users to (roughly) t...
http://issues.apache.org/jira/browse/MAPREDUCE-22    Author: Vinod Kumar Vavilapalli, 2011-12-31, 09:00
[MAPREDUCE-3568] Optimize Job's progress calculations in MR AM - MapReduce - [issue]
...Besides catering to client requests, Job progress is calculated in every heartbeat to the RM so as to print the MR AM's progress. Today the map and reduce progresses are calculated by lookin...
http://issues.apache.org/jira/browse/MAPREDUCE-3568    Author: Vinod Kumar Vavilapalli, 2011-12-28, 13:40
[MAPREDUCE-3567] Extraneous JobConf objects in AM heap - MapReduce - [issue]
...MR AM creates new JobConf objects unnecessarily in a couple of places in JobImpl and TaskImpl which occupy non-trivial amount of heap.While working with a 64 bit JVM on 100K maps jobs, with ...
http://issues.apache.org/jira/browse/MAPREDUCE-3567    Author: Vinod Kumar Vavilapalli, 2011-12-23, 13:43
[MAPREDUCE-3121] DFIP aka 'NodeManager should handle Disk-Failures In Place' - MapReduce - [issue]
...This is akin to MAPREDUCE-2413 but for YARN's NodeManager. We want to minimize the impact of transient/permanent disk failures on containers. With larger number of disks per node, the abilit...
http://issues.apache.org/jira/browse/MAPREDUCE-3121    Author: Vinod Kumar Vavilapalli, 2011-12-23, 00:48
[MAPREDUCE-2744] [MR-279] In unsercure mode, AM can fake resource requirements - MapReduce - [issue]
...Without security, it is impossible to completely avoid AMs faking resources. We can at the least make it as difficult as possible by using the same container tokens and the RM-NM shared key ...
http://issues.apache.org/jira/browse/MAPREDUCE-2744    Author: Vinod Kumar Vavilapalli, 2011-12-23, 00:35
[MAPREDUCE-2745] [MR-279] NM UI should get a read-only view instead of the actual NMContext - MapReduce - [issue]
...NMContext is modifiable, the UI should only get read-only access. Just like the AM web-ui....
http://issues.apache.org/jira/browse/MAPREDUCE-2745    Author: Vinod Kumar Vavilapalli, 2011-12-23, 00:31
[MAPREDUCE-3586] Lots of AMs hanging around in PIG testing - MapReduce - [issue]
...Daniel Dai found this. Here's what he says:I see hundreds of MRAppMaster process on my machine, and lots of tests fail for "Too many open files"....
http://issues.apache.org/jira/browse/MAPREDUCE-3586    Author: Vinod Kumar Vavilapalli, 2011-12-22, 23:52
[MAPREDUCE-3349] No rack-name logged in JobHistory for unsuccessful tasks - MapReduce - [issue]
...Found this while running jobs on a cluster with Karam Singh.This is because TaskAttemptUnsuccessfulCompletionEvent history record doesn't have a rack field....
http://issues.apache.org/jira/browse/MAPREDUCE-3349    Author: Vinod Kumar Vavilapalli, 2011-12-22, 13:19
Re: JAXB / Guice errors - MapReduce - [mail # dev]
...We should definitely add this to README/INSTALL/wiki. Can you please do that?  Thanks, +Vinod  On Tue, Dec 20, 2011 at 11:57 AM, Ravi Prakash  wrote:  ...
   Author: Vinod Kumar Vavilapalli, 2011-12-20, 23:34
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