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Re: Hadoop's Avro dependencies. - MapReduce - [mail # user]
...Also, if I am not mistaken, there is 2 kind of serializations in Hadoop.  There is the one used by MapReduce for transmitting user data : Writable by default, indeed.  But there is...
   Author: Bertrand Dechoux, 2012-08-22, 06:27
[expand - 1 more] - Re: why is num of map tasks gets overridden? - MapReduce - [mail # user]
...3) Similarly to 2, you could consider multithreading. So in each physical node you would only to have the equivalent in memory of what is required for a map while having the processing power...
   Author: Bertrand Dechoux, 2012-08-22, 06:23
Re: Changing tab delimiter between key and value - MapReduce - [mail # user]
...It's maybe a typo in your post but did put the stars too in your code/configuration? Because there isn't any...  Regards  Bertrand  On Tue, Aug 21, 2012 at 6:51 PM, Bejoy Ks &...
   Author: Bertrand Dechoux, 2012-08-21, 17:27
Re: Issue while setting up eclipse for mapreduce - MapReduce - [mail # user]
...Hi Rahul ,  1) which blog? 2) don't use bold... 3) use maven? 4) If you really like doing everything by hand, you should be able to download them from maven repository : http://mvnrepos...
   Author: Bertrand Dechoux, 2012-08-21, 11:05
Re: Collecting MAP output in a Iterator - MapReduce - [mail # user]
...The question is why do you want to do that? How will you use the output? You really want a cross join? This a very expensive operation (in terms of memory).  Could you provide more cont...
   Author: Bertrand Dechoux, 2012-08-20, 20:28
[expand - 2 more] - Re: Hadoop Real time help - MapReduce - [mail # user]
...The terms are * ESP : http://en.wikipedia.org/wiki/Event_stream_processing * CEP : http://en.wikipedia.org/wiki/Complex_event_processing  By the way, processing streams in real time ten...
   Author: Bertrand Dechoux, 2012-08-20, 07:37
[expand - 1 more] - Re: Permission denied hadoop job - MapReduce - [mail # user]
...It wasn't meant to be a sardonic retort and I apologize if it did sound like it. A few times, people ask questions which make think that they didn't have access to the right documentation. &...
   Author: Bertrand Dechoux, 2012-08-19, 11:29
Re: video compression - MapReduce - [mail # user]
...Hi Malik,  What the question?  1) Can Hadoop be used to compress efficiently videos? Sure, parellelization could help in that case.  2) Does Hadoop provide a class/library in ...
   Author: Bertrand Dechoux, 2012-08-17, 06:00
Re: medical diagnosis project - MapReduce - [mail # user]
...Hi,  This is a *not-for*-*profit *mailing list. You might want to describe more precisly what are your questions. You have a problem (medical diagnosis) and you choose a technical solut...
   Author: Bertrand Dechoux, 2012-08-16, 08:08
[expand - 2 more] - Re: how to enhance job start up speed? - MapReduce - [mail # user]
...Seems like you want to misuse Hadoop but maybe I still don't understand your context.  The standard way would be to split your files into multiples maps. Each map could profit from data...
   Author: Bertrand Dechoux, 2012-08-13, 16:07
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