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Re: help in distribution of a task with hadoop - Hadoop - [mail # user]
...1) A standard way of doing it would be to have all your files content inside HDFS. You could then process  where key would be the name of the file and value its contents. It would impro...
   Author: Bertrand Dechoux, 2012-08-13, 18:22
Re: Mechanism of hadoop -jar - Hadoop - [mail # user]
...1) Source code for sure. I don't know if you could find any other technical document about it.  2) Where is your file? If it is inside your jar, hadoop should not infer with the 'normal...
   Author: Bertrand Dechoux, 2012-08-11, 22:47
Re: Reducer MapFileOutpuFormat - Hadoop - [mail # user]
...Your use of 'index' is indeed not clear. Are you talking about Hive or HBase?  I can confirm that you will have one result file per reducer. Of course, for efficiency reasons, you need ...
   Author: Bertrand Dechoux, 2012-07-27, 05:54
Re: Hadoop Multithread MapReduce - Hadoop - [mail # user]
...Hi,  Summarizing the two previous answers : yes, multithreaded mappers are supported. However, the most common use case is to increase the number of map 'slots'.  Have you consider...
   Author: Bertrand Dechoux, 2012-07-26, 07:19
Re: Implement Triggers for HDFS - Hadoop - [mail # user]
...HBase has coprocessors which might help you with your use case.  https://blogs.apache.org/hbase/entry/coprocessor_introduction  Regards  Bertrand  On Thu, Jul 26, 2012 at...
   Author: Bertrand Dechoux, 2012-07-26, 07:03
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