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Re: what happens when a datanode rejoins? - MapReduce - [mail # user]
...Hi Mehul,              DataNode rejoins take care of only NameNode. Thanks & Regards, Ramesh.Narasingu  On Tue, Sep 11, 2012 at 2:36 PM, Mehul Choube ...
   Author: Narasingu Ramesh, 2012-09-11, 09:08
Re: hadoop trunk build failure - yarn, surefire related? - MapReduce - [mail # user]
...Hi,          Please find i think one command is there then only build the all applications. Thanks & Regards, Ramesh.Narasingu  On Tue, Sep 11, 2012 at 2:28 PM,...
   Author: Narasingu Ramesh, 2012-09-11, 09:05
Re: Can't run PI example on hadoop 0.23.1 - MapReduce - [mail # user]
...Hi Vinod,             Please check whether input file location and output file location doesnt match. please find your input file first put into HDFS and then r...
   Author: Narasingu Ramesh, 2012-09-11, 09:04
Re: how to make different mappers execute different processing on same data ? - Hadoop - [mail # user]
...Hi Jason,             Mehmet said is exactly correct ,without reducers we cannot increase performance please you can add mappers and reducers in any processing ...
   Author: Narasingu Ramesh, 2012-09-11, 08:10
[expand - 2 more] - Re: Hadoop Streaming: Does not recognise PATH and CLASSPATH defined - MapReduce - [mail # user]
...Hi Andy,             Please try once other wise you can again download new hadoop 1.0.2 it is stable. you can set all environment variables in vi .bashrc or ged...
   Author: Narasingu Ramesh, 2012-09-04, 08:52
Re: Error using hadoop in non-distributed mode - MapReduce - [mail # user]
...Hi Pat,             Please specify correct input file location. Thanks & Regards, Ramesh.Narasingu  On Mon, Sep 3, 2012 at 9:28 PM, Pat Ferrel  wrote:...
   Author: Narasingu Ramesh, 2012-09-04, 08:14
Re: knowing the nodes on which reduce tasks will run - MapReduce - [mail # user]
...Hi Abhay,             NameNode it has address of the all data nodes. MapReduce can do all the data is processing. First data set is putting into HDFS filesystem...
   Author: Narasingu Ramesh, 2012-09-04, 08:11
Re: how to execute different tasks on data nodes(simultaneously in hadoop). - MapReduce - [mail # user]
...Hi Users,               Hadoop can distribute all the data into HDFS inside MapReduce tasks can work together. which one is goes to which data node and how...
   Author: Narasingu Ramesh, 2012-09-04, 08:03
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