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How to update the timestamp of a file in HDFS - MapReduce - [mail # user]
...Hi,  Can you please help on to update the date & timestamp of a file in HDFS.  regards, Rams...
   Author: Ramasubramanian Narayanan..., 2013-09-05, 05:28
Suggestion need on desinging Flatten table for HBase given scenario - MapReduce - [mail # user]
...Dear All,   For the below 1 to many relationship column sets, require suggestion on how to design a Flatten HBase table... Kindly refer the attached image for the scenario...  Pls ...
   Author: Ramasubramanian Narayanan..., 2013-09-05, 04:52
Can we setup Flume in Apache Hadoop? - MapReduce - [mail # user]
...Hi,  Can we setup Flume in Apache Hadoop... If yes can someone share the URL for the steps to do so...  Thanks and Regards, Rams...
   Author: Ramasubramanian Narayanan..., 2013-04-15, 14:40
[expand - 2 more] - Re: Please help on providing correct answers - MapReduce - [mail # user]
...Hi,  Have given my explanation for choosing and why I am saying given answer is wrong...  You are running a job that will process a single InputSplit on a cluster which has no othe...
   Author: Ramasubramanian Narayanan..., 2012-11-07, 18:54
[expand - 1 more] - Re: Question related to Number of Mapper - MapReduce - [mail # user]
...Hi,  Thanks!  But it is given as 100 Mappers... I think we can also use 'n' number of Mappers as the same as the number of input files... (not for this question)... If you know mor...
   Author: Ramasubramanian Narayanan..., 2012-11-07, 16:46
Regarding MapReduce Input Format - MapReduce - [mail # user]
...Hi,  I came across the below question and I feel 'D' is the correct answer but in some site it is mentioned that 'B' is the correct answer... Can you please tell which is the right one ...
   Author: Ramasubramanian Narayanan..., 2012-11-07, 16:11
Can we use Pentaho Job in oozie? - MapReduce - [mail # user]
...Hi,  Can we use Pentaho Jobs in oozie?  regards, Rams...
   Author: Ramasubramanian Narayanan..., 2012-11-07, 15:59
Regarding loading Image file into HDFS - MapReduce - [mail # user]
...Hi,   I have basic doubt... How Hadoop splits an Image file into blocks and puts in HDFS? Usually Image file cannot be splitted right how it is happening in Hadoop?  regards, Rams...
   Author: Ramasubramanian Narayanan..., 2012-11-07, 14:52
[expand - 2 more] - Re: Sample questions for taking Cloudera CDH3 exam for Hadoop developer - MapReduce - [mail # user]
...Hi,  I am going to take day after tomorrow :)  regards, Rams  On Wed, Nov 7, 2012 at 7:29 PM, Marco Shaw  wrote:  ...
   Author: Ramasubramanian Narayanan..., 2012-11-07, 14:04
Doubt on Input and Output Mapper - Key value pairs - MapReduce - [mail # user]
...Hi,  Which of the following is correct w.r.t mapper.  (a) It accepts a single key-value pair as input and can emit any number of key-value pairs as output, including zero. (b) It a...
   Author: Ramasubramanian Narayanan..., 2012-11-07, 12:39
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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