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Re: How does mapper process partial records? - MapReduce - [mail # user]
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...Harsh, Thanks for the response. the split boundary and when reading other than the first FileSplit, TextInputFormat ignores the content up to the first newline. When the f...
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Author: Praveen Sripati,
2013-01-25, 00:37
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How does mapper process partial records? - MapReduce - [mail # user]
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...Hi, HDFS splits the file across record boundaries. So, how does the mapper processing the second block (b2) determine that the first record is incomplete and should process starting fr...
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Author: Praveen Sripati,
2013-01-24, 16:50
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Ant offline build - MapReduce - [mail # user]
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...Hi, I have got the code for 0.22 and did the build successfully using 'ant clean compile eclipse' command. But, the ant command is downloading the dependent jar files every time. How t...
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Author: Praveen Sripati,
2012-04-01, 03:40
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API Documentation for - MapReduce - [mail # dev]
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...Hi, The API documentation for o.a.h.filecache.DistributedCache is incomplete. In the methods inherited none of the methods are URL to the method details. Without going through the code...
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Author: Praveen Sripati,
2012-01-12, 09:46
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Re: Not able to start the NodeManager - MapReduce - [mail # user]
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...Not sure why the the properties in the .bashrc are not being picked by the scripts. Why is it? I am using Ubuntu 11.10. I had to export some variables in the `libexec/hadoop-config.sh` and `...
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Author: Praveen Sripati,
2012-01-10, 14:35
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Status of the completed containers (0.23) - MapReduce - [mail # dev]
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...Hi, Documentation says that the NM sends the status of the completed containers to the RM and the RM sends it to the AM. This is the interface (1) below. What is the purpose of the int...
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Author: Praveen Sripati,
2012-01-09, 13:42
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Not able to start the NodeManager - MapReduce - [mail # user]
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...Hi, I am trying to setup 0.23 on a cluster and am stuck with errors while starting the NodeManager. The slaves file is proper and I am able to do a password-less ssh from the master to...
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Author: Praveen Sripati,
2012-01-09, 12:16
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Re: Queries on next gen MR architecture - MapReduce - [mail # user]
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...Thanks for the response. I was just thinking why some of the design decisions were made with MRv2. *). If InputSplit1 is on Node11 and Node12 and InputSplit2 on Node21 and ...
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Author: Praveen Sripati,
2012-01-08, 02:47
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Re: Problem setting up 0.23 on a Cluster - MapReduce - [mail # user]
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...Hi, Here are the steps I had to do to get the `sbin/hadoop-daemons.sh stop datanode` (note the plural daemons) work. 1. copy the hadoop-env.sh from ./share/hadoop/common/template...
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Author: Praveen Sripati,
2012-01-07, 15:39
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Re: Problem setting up 0.23 on a Cluster - MapReduce - [mail # user]
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...Ronald, Here is the output uid=1000(praveensripati) gid=1000(praveensripati) groups=1000(praveensripati),4(adm),20(dialout),24(cdrom),46(plugdev),116(lpadmin),118(admin),124(samb...
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Author: Praveen Sripati,
2012-01-07, 09:53
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