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Re: How to shuffle (Key,Value) pair from mapper to multiple reducer - MapReduce - [mail # user]
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...Hi you can use Job#setNumReduceTasks(int tasks) method to set the number of reducer to output. On Wed, Mar 13, 2013 at 2:15 PM, Vikas Jadhav wrote: Don't Grow Old,...
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Author: feng lu,
2013-03-13, 07:21
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Re: hadoop cluster not working - MapReduce - [mail # user]
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...Hi Are you able to run the wordcount example in hadoop-*-examples.jar using this command. bin/hadoop jar hadoop-*-examples.jar wordcount [-m ] [-r ] check your JobTr...
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Author: feng lu,
2013-03-10, 03:26
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Re: MapReduce processing with extra (possibly non-serializable) configuration - MapReduce - [mail # user]
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...Hi May be you can see the useage of DistributedCache [0] , It's a facility provided by the MR framework to cache files (text,archives, jars etc) needed by applications. [0]...
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Author: feng lu,
2013-02-22, 01:55
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MapFileOutputFormat class is not found in hadoop-core 1.1.1 - MapReduce - [mail # user]
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...Hi all i want to migrate the nutch WebGraph class to new MapReduce API, https://issues.apache.org/jira/browse/NUTCH-1223 . but i found MapFileOutputFormat class is not in the org...
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Author: feng lu,
2013-01-25, 04:59
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Re: How to output according to the key in reducer? - MapReduce - [mail # user]
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...Hi Maybe you can refer to http://hadoop.apache.org/docs/r1.0.3/api/org/apache/hadoop/mapred/lib/MultipleSequenceFileOutputFormat.html or http://hadoop.apache.org/docs/r1.0.3/api/...
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Author: feng lu,
2012-09-17, 08:47
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Re: Extension points available for data locality - MapReduce - [mail # user]
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...Hi Tharindu May you can try the Gora,The Apache Gora open source framework provides an in-memory data model and persistence for big data. Gora supports persisting to column stores, key...
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Author: feng lu,
2012-08-21, 09:44
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ss - MapReduce - [mail # user]
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...ss Don't Grow Old, Grow Up... :-)...
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Author: feng lu,
2012-08-09, 02:30
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