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[expand - 1 more] - Re: data distribution in HDFS - Hadoop - [mail # user]
...AFAIK there is no way to disable this "feature" . This is an optimization.  It happens because in your case the node generating the data is also a data  node.  Raj   &nbs...
   Author: Raj Vishwanathan, 2012-04-02, 19:59
Re: How to modify hadoop-wordcount example to display File-wise results. - Hadoop - [mail # user]
...Aaron   You can get the details of how much data each mapper processe d, on which node ( IP address actually!) from the job logs.  Raj      [EMAIL PROTECTED]> [EM...
   Author: Raj Vishwanathan, 2012-03-30, 02:56
Re: Separating mapper intermediate files - Hadoop - [mail # user]
...Aayush  You can use the following. Just play around with the pattern       keep.task.files.pattern   .* _m_123456_0   Keep all files from tasks whose task  names match the giv...
   Author: Raj Vishwanathan, 2012-03-27, 19:21
Re: Hadoop pain points? - Hadoop - [mail # user]
...Lol!  Raj    preitzer  t: Friday, March 2, 2012 8:31 AM   [EMAIL PROTECTED]        Hadoop pain points? ail.com lent pain points that mance related (memory ally....
   Author: Raj Vishwanathan, 2012-03-02, 17:16
[expand - 1 more] - Re: Adding nodes - Hadoop - [mail # user]
...WHat Joey said is correct for both apache and cloudera distros. The DN/TT   daemons  will connect to the NN/JT using the config files. The master  and slave files are used for star...
   Author: Raj Vishwanathan, 2012-03-02, 01:51
Re: Error in Formatting NameNode - Hadoop - [mail # user]
...Manish  If you read the error message, it says "connection refused". Big clue :-)    You probably have firewall configured.   Raj  Sent from my iPad Please excuse th...
   Author: Raj Vishwanathan, 2012-02-12, 15:40
Re: reference document which properties are set in which configuration file - Hadoop - [mail # user]
...Harsh, All  This was one of the first questions that  I asked. It is  sometimes not clear whether some parameters are site related  or jab rela ted or whether it belongs to NN, JT ...
   Author: Raj Vishwanathan, 2012-02-11, 05:08
Re: Combining MultithreadedMapper threadpool size & map.tasks.maximum - Hadoop - [mail # user]
...  Here is what I understand   The RecordReader for the MTMappe rt takes the input split and cycles the records among the available threads . It also ensures that the map outputs ar...
   Author: Raj Vishwanathan, 2012-02-10, 22:39
Re: Can I write to an compressed file which is located in hdfs? - Hadoop - [mail # user]
...Hi  Here is a piece of code that does the reverse of what you want; it  takes a bunch of compressed files ( gzip, in this case ) and converts them  to text.  You can twea...
   Author: Raj Vishwanathan, 2012-02-07, 18:06
Re: Problem in reduce phase(critical) - Hadoop - [mail # user]
...It says in the logs  org.apache.hadoop.mapred.ReduceTask: java.net.Conn ectException: Connection refused    You have a network problem. Do  you have firewall enabled.  Ra...
   Author: Raj Vishwanathan, 2012-02-03, 16:52
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