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Re: Need help about task slots - MapReduce - [mail # user]
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...Hello guys, My 2 cents : Actually no. of mappers is primarily governed by the no. of InputSplits created by the InputFormat you are usi...
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Author: Mohammad Tariq,
2013-05-11, 17:37
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Re: Issue with running my first hadoop program using eclipse - MapReduce - [mail # user]
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...Hello Ramya, You might find this JIRAuseful which talks about the same problem. And for configuring the eclipse plugin you could visit this page. I have tries to explain the pr...
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Author: Mohammad Tariq,
2013-05-10, 11:48
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Re: Block placement Policy - MapReduce - [mail # user]
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...You might find this useful : https://issues.apache.org/jira/browse/HDFS-385 Warm Regards, Tariq https://mtariq.jux.com/ cloudfront.blogspot.com On Sat, May 4, 2013 at 8:57 PM, M...
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Author: Mohammad Tariq,
2013-05-04, 15:35
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Re: pseudo distributed mode - MapReduce - [mail # user]
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...After formatting the NN, start the daemons using "bin/start-hdfs.sh" and "bin/start-mapred.sh". If it still doesn't work show us the logs. Warm Regards, Tariq https://mtariq.jux.com/ c...
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Author: Mohammad Tariq,
2013-05-03, 17:44
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Re: there is not data-node - MapReduce - [mail # user]
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... Have you reformatted the NN(unsuccessfully)?Was your NN serving some other cluster earlier or your DNs were part of some other cluster?Datanodes bind themselves to namenode thr...
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Author: Mohammad Tariq,
2013-05-01, 18:51
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Re: partition as block? - MapReduce - [mail # user]
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...Hello Jay, What are you going to do in your custom InputFormat and partitioner?Is your InputFormat is going to create larger splits which will overlap with larger blocks?...
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Author: Mohammad Tariq,
2013-04-30, 18:56
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Re: Can't initialize cluster - MapReduce - [mail # user]
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...Set "HADOOP_MAPRED_HOME" in your hadoop-env.sh file and re-run the job. See if it helps. Warm Regards, Tariq https://mtariq.jux.com/ cloudfront.blogspot.com On Tue, Apr 30, 2013...
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Author: Mohammad Tariq,
2013-04-30, 17:32
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Re: Incompartible cluserIDS - MapReduce - [mail # user]
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...make it 755. Warm Regards, Tariq https://mtariq.jux.com/ cloudfront.blogspot.com On Tue, Apr 30, 2013 at 3:30 AM, Kevin Burton wrote: ...
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Author: Mohammad Tariq,
2013-04-29, 22:09
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Re: Hardware Selection for Hadoop - MapReduce - [mail # user]
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...If I were to start with a 5 node cluster, I would do this : *Machine 1 : *NN+JT 32GB RAM, 2xQuad Core Proc, 500GB SATA HDD along with a NAS(To make sure metadata is safe) *Machin...
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Author: Mohammad Tariq,
2013-04-29, 21:16
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How DBReocrdReader works - MapReduce - [mail # user]
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...Hello list, Due to some need arose lately I had to start looking into DBInputFormat. In order to get myself familiar with it I started to goolge but ...
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Author: Mohammad Tariq,
2013-04-27, 22:32
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