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Re: How do I recover the namenode? - Hadoop - [mail # user]
...please follow along the steps• Shutdown all Hadoop daemons on all servers in the cluster.• Copy NameNode metadata onto the secondary NameNode and copy the entiredirectory tree to the seconda...
   Author: Raj K Singh, 2014-07-07, 17:06
Re: Map reduce Query - Hadoop - [mail # user]
...you can get the input from some source(e.g. files) in the mapper setup()method and emit it to the context.write() so that it can reach to thereducer.Raj K Singhhttp://in.linkedin.com/in/rajk...
   Author: Raj K Singh, 2014-06-19, 11:46
Re: Query map reduce - Hadoop - [mail # user]
...call context.write() to emit keys/values based on some conditions.Raj K Singhhttp://in.linkedin.com/in/rajkrrsinghhttp://www.rajkrrsingh.blogspot.comMobile  Tel: +91 (0)9899821370On Wed...
   Author: Raj K Singh, 2014-06-18, 13:42
Re: one node can't start tasktracker - Hadoop - [mail # user]
...​the problem seems with the jetty server port binding, as per the postedlog​2014-06-11 10:46:57,475 INFO org.apache.hadoop.http.HttpServer: Portreturned by webServer.getConnectors()[0].getLo...
   Author: Raj K Singh, 2014-06-11, 06:44
Re: Installing Hadoop in Amazon EC2 - Hadoop - [mail # user]
...​yo​u can follow the provided link to setup hadoop cluster very easilyhttp://java.dzone.com/articles/how-set-multi-node-hadoopRaj K Singhhttp://in.linkedin.com/in/rajkrrsinghhttp://www.rajkr...
   Author: Raj K Singh, 2014-06-06, 16:39
Re: hadoop java connection problem - Hadoop - [mail # user]
...have you tried to run it through "hadoop jar" instead of directly runningit through the eclipse. it seems problem with your path.try adding conf-site.xml using conf.addResource(new Path(Vars...
   Author: Raj K Singh, 2014-06-06, 10:52
Re: issue about change NN node - Hadoop - [mail # user]
...I have not try it yet but you can use old fsimage and editlogs to build anew name node.Raj K Singhhttp://in.linkedin.com/in/rajkrrsinghhttp://www.rajkrrsingh.blogspot.comMobile  Tel: +9...
   Author: Raj K Singh, 2014-06-06, 06:12
Re: How can a task know if its running as a MR1 or MR2 job? - Hadoop - [mail # user]
...HiI guess when we call submit() method that in tern call the setUseNewAPI()method to set the MR2 relevent setting.. here what i found after code walkthrough of hadoopprivate void setUseNewAP...
   Author: Raj K Singh, 2014-06-06, 05:53
Re: how can i monitor Decommission progress? - Hadoop - [mail # user]
...use$hadoop dfsadmin -reportRaj K Singhhttp://in.linkedin.com/in/rajkrrsinghhttp://www.rajkrrsingh.blogspot.comMobile  Tel: +91 (0)9899821370On Sat, May 31, 2014 at 11:26 AM, ch huang &n...
   Author: Raj K Singh, 2014-06-05, 17:37
Re: (Very) newbie questions - Hadoop - [mail # user]
...are you able to compile it using mvn compile -Pnative-Dmaven.test.skip=true?Raj K Singhhttp://in.linkedin.com/in/rajkrrsinghhttp://www.rajkrrsingh.blogspot.comMobile  Tel: +91 (0)989982...
   Author: Raj K Singh, 2014-06-05, 16:57
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