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Re: Queries on next gen MR architecture - MapReduce - [mail # user]
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...Could someone please clarify on the below queries? Regards, Praveen On Thu, Jan 5, 2012 at 9:59 PM, Praveen Sripati w rote: s d f yes, the task completion status could also...
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Author: Praveen Sripati,
2012-01-07, 02:23
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Problem setting up 0.23 on a Cluster - MapReduce - [mail # user]
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...Hi, I am able to run 0.23 on a single node and trying to setup it on a cluster and getting errors. When I try to start the data nodes, I get the below errors. I have also tried a...
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Author: Praveen Sripati,
2012-01-06, 17:51
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Queries on next gen MR architecture - MapReduce - [mail # user]
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...Hi, I had been going through the MRv2 documentation and have the following queries 1) Let's say that an InputSplit is on Node1 and Node2. Can the ApplicationMaster ask the ...
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Author: Praveen Sripati,
2012-01-05, 16:29
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Re: Is it possible to user hadoop archive to specify third party libs - MapReduce - [mail # user]
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...Check this article from Cloudera for different options. http://www.cloudera.com/blog/2011/01/how-to-include-third-party-libraries-in-your-map-reduce-job/ Praveen On Tue, Ja...
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Author: Praveen Sripati,
2012-01-03, 14:57
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Re: output files written by reducers - MapReduce - [mail # user]
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...1- Does hadoop automatically use the content of the files written by reducers? No. If Job1 and Job2 are run in sequence, then the o/p of Job1 can be i/p to Job2. This has to be done pr...
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Author: Praveen Sripati,
2012-01-02, 08:16
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Re: 0.22 Release and Security - MapReduce - [mail # user]
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...Joey, 1) if(!conf.get(HADOOP_SECURITY_AUTHENTICATION).equals("kerberos")) throw new RuntimeException("Cannot start secure datanode in unsecure cluster"); The...
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Author: Praveen Sripati,
2011-12-29, 15:37
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0.22 Release and Security - MapReduce - [mail # user]
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...Hi, The release notes for 0.22 ( http://hadoop.apache.org/common/releases.html#10+December%2C+2011%3A+release+0.22.0+available) it says >Security. ...
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Author: Praveen Sripati,
2011-12-29, 14:41
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Kerberos service token vs Service ticket - MapReduce - [mail # dev]
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...Hi, According to the `Hadoop : The Definitive Guide` and can be thought of as a shared secret between the client and the server. On the first RPC call to the NameNode, the client...
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Author: Praveen Sripati,
2011-12-28, 16:55
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Re: External libraries usage - MapReduce - [mail # user]
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...Check this article from Cloudera on different ways of distributing a jar file to the job. http://www.cloudera.com/blog/2011/01/how-to-include-third-party-libraries-in-your-map-reduce-j...
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Author: Praveen Sripati,
2011-12-28, 11:35
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Re: how does Hadoop Yarn support different programming models? - MapReduce - [mail # user]
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...Bing, FYI ... here are some applications ported to YARN. http://wiki.apache.org/hadoop/PoweredByYarn Praveen On Tue, Dec 27, 2011 at 5:27 AM, Mahadev Konar wrote: &nb...
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Author: Praveen Sripati,
2011-12-27, 02:42
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