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Re: Adding file to HDFs - Hadoop - [mail # user]
...I tried to copy a 2.5 gb to hdfs. it took 3 -4 min. Are we able to reduce that time.   On Tue, Jan 14, 2014 at 3:07 PM, unmesha sreeveni wrote:    *Thanks & Regards*  Unm...
   Author: unmesha sreeveni, 2014-01-14, 18:44
Expressions in MapReduce - Hadoop - [mail # user]
...Are we able to do expresions in Mapreduce Say if i am having a csv file . which has 2 columns. The user is giving an expresion col1  + col2 = col3 Are we able to do this? And when again...
   Author: unmesha sreeveni, 2014-01-11, 18:45
Re: what all can be done using MR - Hadoop - [mail # user]
...For that do we have to write a custom class for value inorder to pass all the columns as value. ie in the example 2 values. Or jst do a concatenation and emit values.   On Sat, Jan 11, ...
   Author: unmesha sreeveni, 2014-01-11, 16:20
Get dynamic values in a user defined class from reducer. - Hadoop - [mail # user]
...Can any one pls suggest a good way My scenario: i hav 1.Driver class 2.Mapper class 3.reducer class 4.Mid class After completing mapper it goes to reduce. From reducer it will be going to Dr...
   Author: unmesha sreeveni, 2013-12-18, 10:02
Re: Hadoop-MapReduce - Hadoop - [mail # user]
...Ranjini can u pls check this. This is not perfect ..I simply did to check my xml data. https://github.com/studhadoop/xmlparsing-hadoop/blob/master/XmlParser11.java   On Tue, Dec 17, 201...
   Author: unmesha sreeveni, 2013-12-17, 09:04
Found checksum error - Hadoop - [mail # user]
...I am trying to run Decision Tree explained in  http://btechfreakz.blogspot.in/2013/04/implementation-of-c45-algorithm-using.html  But while running i am getting Checksum error &nbs...
   Author: unmesha sreeveni, 2013-12-05, 09:59
Write Access Denied in hdfs - Hadoop - [mail # user]
...Every thing works fine except the creation of file and writing into file in hdfs. Not showing any warning.  So i tried doing http://stackoverflow.com/questions/15941108/hdfs-access-from...
   Author: unmesha sreeveni, 2013-12-03, 09:09
Re: Desicion Tree Implementation in Hadoop MapReduce - Hadoop - [mail # user]
...To make it more general, it's better to separate them. Since there might be multiple batches of training (or to-be-label), and you only need to train the model once (if your data is stable)....
   Author: unmesha sreeveni, 2013-12-02, 05:23
Re: Difference between clustering and classification in hadoop - Hadoop - [mail # user]
...when i gone through different Repos for spam data i am only getting MB files . To check in hadoop we need a large file right. I need to test my hadoop svm implementation.I gone through http:...
   Author: unmesha sreeveni, 2013-11-23, 03:11
How to write the contents from mapper into file - Hadoop - [mail # user]
...How to write the contents of mapper into file. Is this fine.  If my inputfile is splited whether my blw code works?  In reducer i am combining this data.   public class MyMapp...
   Author: unmesha sreeveni, 2013-11-13, 05:51
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