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[MAPREDUCE-5199] AppTokens file can/should be removed - MapReduce - [issue]
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...All the required tokens are propagated to AMs and containers via startContainer(), no need for explicitly creating the app-token file that we have today.....
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http://issues.apache.org/jira/browse/MAPREDUCE-5199
Author: Vinod Kumar Vavilapalli,
2013-05-22, 01:37
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[MAPREDUCE-5256] CombineInputFormat isn't thread safe affecting HiveServer - MapReduce - [issue]
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...This was originally fixed as part of MAPREDUCE-5038, but that got reverted now. Which uncovers this issue, breaking HiveServer. Originally reported by Thejas M Nair....
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http://issues.apache.org/jira/browse/MAPREDUCE-5256
Author: Vinod Kumar Vavilapalli,
2013-05-18, 00:15
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Re: Is FileSystem thread-safe? - MapReduce - [mail # user]
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...I see. The lots-of-part-files pattern is what most of us end up using. Thanks, +Vinod Kumar Vavilapalli On May 17, 2013, at 10:16 AM, John Lilley wrote: ...
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Author: Vinod Kumar Vavilapalli,
2013-05-17, 17:34
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Re: Memory Leak while using LocalJobRunner - MapReduce - [mail # user]
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...It's inconvenient, but you can try DefaultMetricsSystem.shutDown(). Please see if that works and file a ticket to make LocalJobRunner automatically do this on finish. Thanks, +Vinod Ku...
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Author: Vinod Kumar Vavilapalli,
2013-05-17, 17:33
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Re: Is FileSystem thread-safe? - MapReduce - [mail # user]
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...As of today, there is no atomic append, so no, what you say isn't possible. FWIU, it is one appender at a time - achieved through a lease per file, and multiple concurrent leases aren't allo...
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Author: Vinod Kumar Vavilapalli,
2013-05-17, 17:14
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Re: Distribution of native executables and data for YARN-based execution - MapReduce - [mail # user]
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...I have a little bit of conflict of interest given I worked on Hadoop YARN all time but.. I have worked on torque/condor based resource management systems too. There are many advantages...
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Author: Vinod Kumar Vavilapalli,
2013-05-17, 17:08
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Re: Distribution of native executables and data for YARN-based execution - MapReduce - [mail # user]
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...In addition, YARN also support local resource types: ARCHIVE, PATTERN and FILE ARCHIVE's are unpacked completely, PATTERN (should be renamed) files are unpacked to extract only files t...
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Author: Vinod Kumar Vavilapalli,
2013-05-17, 17:03
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Re: Distribution of native executables and data for YARN-based execution - MapReduce - [mail # user]
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...The "local resources" you mentioned is the exact solution for this. For each LocalResource, you also mention a LocalResourceVisibility which takes one of the three values today - PUBLIC, PRI...
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Author: Vinod Kumar Vavilapalli,
2013-05-17, 06:55
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[MAPREDUCE-5205] Apps fail in secure cluster setup - MapReduce - [issue]
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...Found at YARN-579 by Daryn Sharp. Need to investigate if it was caused by YARN-579 itself or something else.Secure setup on trunk passes though....
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http://issues.apache.org/jira/browse/MAPREDUCE-5205
Author: Vinod Kumar Vavilapalli,
2013-05-16, 16:13
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[MAPREDUCE-4362] If possible, we should get back the feature of propagating task logs back to JobClient - MapReduce - [issue]
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...MAPREDUCE-3889 removed the code which was trying to pull from /tasklog. We should see if it is possible to get back the feature....
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http://issues.apache.org/jira/browse/MAPREDUCE-4362
Author: Vinod Kumar Vavilapalli,
2013-05-12, 20:24
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