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Re: Job config before read fields - MapReduce - [mail # user]
...What I meant was that you might have to split or redesign your logic or your usecase (which we don't know about)?  Regards, Shahab   On Fri, Aug 30, 2013 at 10:31 PM, Adrian CAPDEF...
   Author: Shahab Yunus, 2013-08-31, 02:42
Re: Helper files in python - MapReduce - [mail # user]
...What you want to do with these? What do you mean by specify? Do you want to run them as a streaming job?  Have you seen the streaming tutorial for hadoop?  Regards, Shahab On Aug 2...
   Author: Shahab Yunus, 2013-08-29, 03:10
Re: Writing data to hbase from reducer - MapReduce - [mail # user]
...There are many way to do it.  You can write your own M/R job in Java to use the provided outputformatter and inputformatters.  Or you can use Pig to store it in HBase using HBaseSt...
   Author: Shahab Yunus, 2013-08-28, 16:53
Re: How to pass parameter to mappers - MapReduce - [mail # user]
...See here: http://hadoop.apache.org/docs/stable/mapred_tutorial.html#Job+Configuration  Regards, Shahab   On Wed, Aug 28, 2013 at 7:59 AM, rab ra  wrote:  ...
   Author: Shahab Yunus, 2013-08-28, 13:35
Re: MapReduce Tutorial tweak - MapReduce - [mail # user]
...As far as I undersstand, StringTokenizer.nextToken returns Java String type object which does not implement the required Writable and Comparable interfaces needed to Hadoop Mapreduce seriali...
   Author: Shahab Yunus, 2013-08-27, 15:57
Re: Jar issue - MapReduce - [mail # user]
...One idea is, you can use the exclusion property of maven (provided you are using that to build your application) while including hadoop dependencies and exclude sl4j that is coming within ha...
   Author: Shahab Yunus, 2013-08-27, 15:51
Re: Simplifying MapReduce API - MapReduce - [mail # user]
...For starters (experts might have more complex reasons), what if your respective map and reduce logic becomes complex enough to demand separate classes? Why tie the clients to implement both ...
   Author: Shahab Yunus, 2013-08-27, 15:48
Re: reg hadoop streaming - MapReduce - [mail # user]
...Yes, I think so. The TaskTracker that launched the mapper and reducer in the child JVM which further invoked the streaming process can (and does) communicate with the JobTracker.  Regar...
   Author: Shahab Yunus, 2013-08-27, 14:51
Re: running map tasks in remote node - MapReduce - [mail # user]
...You say: "Each map process gets a line. The map process will then do a file transfer and process it.  "  What file, from where to where is being transferred in the map? Are you sur...
   Author: Shahab Yunus, 2013-08-23, 12:51
Re: read a changing hdfs file - MapReduce - [mail # user]
...As far as I understand (and experts can correct me), the file being written will be visible once one HDFS block size worth of data is written. This applies to subsequent writing as well. Bas...
   Author: Shahab Yunus, 2013-08-21, 00:57
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB