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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: Adding nodes - Hadoop - [mail # user]
...The master and slave files, if I remember correctly are used to start the correct daemons on the correct nodes from the master node.   Raj  ...
   Author: Raj Vishwanathan, 2012-03-02, 01:10
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
Re: SimpleKMeansCLustering - "Failed to set permissions of path to 0700" - Hadoop - [mail # user]
...Can you run any map/reduce jobs suchas word count? Raj  Sent from my iPad Please excuse the typos.   On Oct 17, 2011, at 5:18 PM, robpd  wrote:   f m.java:525) ava:499) )...
   Author: Raj Vishwanathan, 2011-10-18, 02:07
Re: performance normal? - Hadoop - [mail # user]
...Really horriblr performance  Sent from my iPad Please excuse the typos.   On Oct 8, 2011, at 12:12 AM, tom uno  wrote:  ...
   Author: Raj Vishwanathan, 2011-10-09, 04:21
Re: Maintaining map reduce job logs - The best practices - Hadoop - [mail # user]
...Bejoy  You can find the job specific logs in two places. The first one is in the hd fs ouput directory. The second place is under $HADOOP_HOME/logs/history ($HA DOOP_HOME/logs/history/d...
   Author: Raj Vishwanathan, 2011-09-23, 13:10
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