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setNumTasksToExecutePerJvm and Configure - Hadoop - [mail # user]
...Hello, Suppose I set setNumTasksToExecutePerJvm to -1. Then, the same jvm   may run several tasks consecutively. 1) Will the configure method(if present) be run for every task? Or &nbs...
   Author: Saptarshi Guha, 2009-01-26, 17:45
Re: NLineInputFormat and very high number of maptasks - Hadoop - [mail # user]
...Sorry, i see - every line is now a maptask - one split,one task.(in   this case N=1 line per split) Is that correct? Saptarshi  On Jan 20, 2009, at 11:39 AM, Saptarshi Guha wrote: ...
   Author: Saptarshi Guha, 2009-01-20, 16:42
Sorting on several columns using KeyFieldSeparator and Paritioner - Hadoop - [mail # user]
...Hello, I have  a file with n columns, some which are text and some numeric. Given a sequence of indices, i would like to sort on those indices i.e first on Index1, then within Index2 an...
   Author: Saptarshi Guha, 2009-01-18, 01:06
A reporter thread during the reduce stage for a long running line - Hadoop - [mail # user]
...Hello,   Sorry for the puzzling subject. I have a single long running /statement/ in my reduce method, so the the framework might assume my reduce is not responding and kill it. I solve...
   Author: Saptarshi Guha, 2009-01-09, 08:09
Re: Combiner run specification and questions - Hadoop - [mail # user]
.... So as long as the correctness of the computation doesn't  Right, i had the same thought.     So, i explicitly call the combiner? However at times, the reducer needs all the ...
   Author: Saptarshi Guha, 2009-01-08, 06:32
Re: Problem loading hadoop-site.xml - dumping parameters - Hadoop - [mail # user]
...I have checked, the classpath and $HADOOP_CONF_DIR respectively   contain and point to my conf folder. Regards Saptarshi  On Jan 6, 2009, at 12:53 AM, Sharad Agarwal wrote:   ...
   Author: Saptarshi Guha, 2009-01-06, 15:27
Re: Map input records(on JobTracker website) increasing and decreasing - Hadoop - [mail # user]
...True, i suspected that, however none died. (Nothing in the Tasks killed/Failed field)  On Mon, Jan 5, 2009 at 4:04 PM, Doug Cutting  wrote:    Saptarshi Guha - [EMAIL PRO...
   Author: Saptarshi Guha, 2009-01-05, 21:15
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