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Sun JDK 1.6.033: java.lang.ClassNotFoundException: com.sun.security.auth.UnixPrincipal - Hadoop - [mail # user]
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...Hi guys: Im getting this very odd error in my sun / ubuntu / hadoop run. - im not running a hadoop cluster here, just some local FS java hadoop map/r jobs. - The exception Im get...
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Author: Jay Vyas,
2012-07-02, 04:30
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Re: counters docs - Hadoop - [mail # user]
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...Sure I will get started on this. Thanks for the feedback. On Thu, May 31, 2012 at 1:29 PM, Arun C Murthy wrote: Jay Vyas MMSB/UCHC...
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Author: Jay Vyas,
2012-05-31, 12:37
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counters docs - Hadoop - [mail # user]
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...Hi guys : Where is the best documentation on the default hadoop counters, and how to use/interpret them ? I always seem to forget which ones are important / useful when debugging ........
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Author: Jay Vyas,
2012-05-31, 00:25
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Job constructore deprecation - Hadoop - [mail # user]
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...Hi guys : I have noticed that the comments for this class encourage us to use the Job constructors, yet, they are deprecated. http://hadoop.apache.org/mapreduce/docs/current/api/org/ap...
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Author: Jay Vyas,
2012-05-23, 03:32
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Re: Simulating cluster config parameters (in local mode) - Hadoop - [mail # user]
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...Ahhh I now know the answer : My solution : 1) Get a simple mapred config file and remove all parameters but the one i need to set for my local mode. 2) Put the mapred site config .xml ...
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Author: Jay Vyas,
2012-05-09, 21:14
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Simulating cluster config parameters (in local mode) - Hadoop - [mail # user]
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...Hi guys : I need to set a cluster configuration parameter (specifically, the "mapreduce.job.counters.limit") .... .... Easy ... right ? Well.... one problem : I'm running hadoop in loc...
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Author: Jay Vyas,
2012-05-09, 20:09
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heap space error, low memory job, unit test - Hadoop - [mail # user]
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...Hi guys : I have a map/r job that has always worked fine, but which fails due to a heap space error on my local machine during unit tests. It runs in hadoop's default mode, and ...
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Author: Jay Vyas,
2012-05-02, 00:21
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EMR Hadoop - Hadoop - [mail # user]
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...Hi guys : 1) Does anybody know if there is a VM out there which runs EMR hadoop ? I would like to have a local vm for dev purposes that mirrored the EMR hadoop instances. 2...
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Author: Jay Vyas,
2012-04-30, 04:57
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The meaning of FileSystem in context of OutputFormat storage - Hadoop - [mail # user]
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...I just saw this line in the javadocs for OutputFormat: "Output files are stored in a FileSystem. " Seems like an odd sentence. What is the implication here -- is this imply...
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Author: Jay Vyas,
2012-04-25, 15:01
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Re: understanding hadoop job submission - Hadoop - [mail # user]
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...Yes, the job is submitted by the api calls in map reduce code On Wed, Apr 25, 2012 at 3:56 AM, Devaraj k wrote: Jay Vyas MMSB/UCHC...
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Author: Jay Vyas,
2012-04-25, 09:41
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