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Re: Mapreduce outputs to a different cluster? - HDFS - [mail # user]
...You can specify the HDFS path as follows: FileOutputFormat.setOutputPath(conf, new Path(args[1])); where Path object is of course the location of your output dir.  See this for details ...
   Author: Shahab Yunus, 2013-10-25, 12:51
Re: set the number of reduce tasks in the wordcount by command line - HDFS - [mail # user]
...Yeah, thanks Krishna for pointing out Yarn specific property name.  Regards, Shahab   On Wed, Sep 25, 2013 at 6:54 PM, Krishna Pisupat wrote:  ...
   Author: Shahab Yunus, 2013-09-26, 00:24
Re: Mapreduce jobtracker recover property - HDFS - [mail # user]
...*mapred.jobtracker.restart.recover *is the old API, while the other one is for new. It is used to specify whether the job should try to resume at recovering time and when restarting. If you ...
   Author: Shahab Yunus, 2013-09-24, 03:01
Re: Pig jars - HDFS - [mail # user]
...Basically pig.jar has hadoop within itself while the other one, as evident by the name, does not include hadoop.  Details here: http://hadoopified.wordpress.com/2013/04/07/pig-startup-s...
   Author: Shahab Yunus, 2013-09-06, 17:59
Re: about permission to perform the mapreduce task - HDFS - [mail # user]
...Check out the 'Map Reduce' section in this link (assuming MRv1): http://gbif.blogspot.com/2011/01/setting-up-hadoop-cluster-part-1-manual.html  Regards, Shahab   On Fri, Sep 6, 201...
   Author: Shahab Yunus, 2013-09-06, 12:26
Re: what is the difference between mapper and identity mapper, reducer and identity reducer? - HDFS - [mail # user]
...Identity Mapper and Reducer just like the concept of Identity function in mathematics i.e. do not transform the input and return it as it is in output form. Identity Mapper takes the input k...
   Author: Shahab Yunus, 2013-09-05, 14:01
Re: Job config before read fields - HDFS - [mail # user]
...Personally, I don't know a way to access job configuration parameters in custom implementation of Writables ( at least not an elegant and appropriate one. Of course hacks of various kinds be...
   Author: Shahab Yunus, 2013-08-31, 23:48
Re: Writing data to hbase from reducer - HDFS - [mail # user]
...Just google it.  For HBaseStorage http://blog.whitepages.com/2011/10/27/hbase-storage-and-pig/  For M/R: http://wiki.apache.org/hadoop/Hbase/MapReduce  Regards, Shahab   ...
   Author: Shahab Yunus, 2013-08-28, 17:03
Re: Partitioner vs GroupComparator - HDFS - [mail # user]
...@Jan, why not, not send the 'hidden' part of the key as a value? Why not then pass value as null or with some other value part. So in the reducer side there is no duplication and you can ext...
   Author: Shahab Yunus, 2013-08-23, 17:06
Re: Maven Cloudera Configuration problem - HDFS - [mail # user]
...You need to configure your namenode and jobtracker information in the configuration files within you application. Only set the relevant properties in the copy of the files that you are bundl...
   Author: Shahab Yunus, 2013-08-13, 13:14
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