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[expand - 2 more] - Re: WholeFileInputFormat in hadoop - Hadoop - [mail # user]
...I am trying to do DBScan Algo.I refered the algo in "Data Mining - Conceptsand Techniques (3rd Ed)" chapter 10 Page no: 474.Here in this algorithmwe need to find the disance between each poi...
   Author: unmesha sreeveni, 2014-06-30, 04:02
Finding mamimum value in reducer - Hadoop - [mail # user]
...I have a scenario.Output from previous job1 is http://pastebin.com/ADa8fTGB.In next job2 I need to get/find i key having maximum value.eg i=3, 3 keys having maximum value.(i will be a custom...
   Author: unmesha sreeveni, 2014-06-24, 09:15
[expand - 1 more] - Re: Map reduce query - Hadoop - [mail # user]
...U can try it using Distributed cacheIn DriverFileStatus[] list = fs.globStatus(extrafile);for (FileStatus status : list) {  DistributedCache.addCacheFile(status.getPath().toUri(), ...
   Author: unmesha sreeveni, 2014-06-20, 09:54
[expand - 3 more] - Re: Counters in MapReduce - Hadoop - [mail # user]
...yes rectified that errorBut after 1 st iteration when it enters to second iterationshowing java.io.FileNotFoundException: for  *Path out1 = new Path(CL);**Why is it so .**Normally ...
   Author: unmesha sreeveni, 2014-06-12, 08:32
Custom FileInputFormat not able to pass value to mapper - Hadoop - [mail # user]
...Below is my code. What my code does isI stored the entire file into MyFileInputFormat. And from that I extractedthe line I want.Basically it will be a couple of characters starting from 0to ...
   Author: unmesha sreeveni, 2014-06-11, 10:16
Need advice for Implementing classification algorithms in MapReduce - Hadoop - [mail # user]
...In-order to learn MapReduce algorithm,I usually try it from scratch.What I follow is for classification algorithms-*First I build a model **hadoop jar myjar.jar edu.ModelDriver  **secon...
   Author: unmesha sreeveni, 2014-05-26, 06:21
Issue with conf.set and conf.get method - Hadoop - [mail # user]
...Hi,I am having an issue with conf.set and conf.get methodDriverConfiguration conf=new Configuration();conf.set("delimiter",args[2]);       //File delimiter as user argumentMap...
   Author: unmesha sreeveni, 2014-05-21, 07:34
Re: Are mapper classes re-instantiated for each record? - Hadoop - [mail # user]
...Setup() Method is called before all the mappers and cleanup() method iscalled after all mappersOn Tue, May 6, 2014 at 1:17 PM, Raj K Singh  wrote:*Thanks & Regards **Unmesha Sreeveni U....
   Author: unmesha sreeveni, 2014-05-16, 09:25
Re: writing multiple files on hdfs - Hadoop - [mail # user]
...Yes you can do so. Hadoop is a distributed computing framework. And you areable to do multiple writes also. Only thing we cannot do is we will not beable to update a file content. But you ca...
   Author: unmesha sreeveni, 2014-05-16, 01:08
[Blog] Map-only jobs in Hadoop for beginers - Hadoop - [mail # user]
...​Hihttp://www.unmeshasreeveni.blogspot.in/2014/05/map-only-jobs-in-hadoop.htmlThis is a post on Map-only Jobs in Hadoop for beginers.​*Thanks & Regards **Unmesha Sreeveni U.B**Hadoop, Bigdat...
   Author: unmesha sreeveni, 2014-05-05, 11:55
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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