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Setting NLinesInputFormat with varaible values in MapReduce - Hadoop - [mail # user]
...Hi folks,There are several input files to feed into mapper, each of which hassimilar format(N is variable in each file)N,line1,line2,...lineNA common practice is to set a fixed value of N(ma...
   Author: Blade Liu, 2014-10-08, 02:09
[expand - 1 more] - Re: TestDFSIO and hadoop config options - Hadoop - [mail # user]
...HiI would also go for the testdfsio option passing wayOnce your write test is over you can check how many replicas were created for each file withhdfs fsck  -files -blocksUlulLe 07/10/2...
   Author: Ulul, 2014-10-07, 21:51
[expand - 4 more] - Re: Hadoop and RAID 5 - Hadoop - [mail # user]
...Yes, I also read in P420 user guide that it was RAID only. We'll live with it I guess...Thanks for the HP/Cloudera link, it's precious reading !Le 07/10/2014 08:52, Travis a écrit : ...
   Author: Ulul, 2014-10-07, 20:38
bzip2 input decompression not using native library - Hadoop - [mail # user]
...Can someone tell me why native bzip2 de/compression works in hadoop 2.4.1 for map output compression, but the java bzip2 implementation is used for input file decompression?  Is this ex...
   Author: Don Wallwork, 2014-10-07, 19:52
Hadoop Datanode configuration RAM and Cores - Hadoop - [mail # user]
...Hello,I am using Hadoop cluster with 9 nodes. I would like to know what is thebasic datanode configuration in Hadoop cluster.I am using following configuration on Namenode and Datanode.RAM =...
   Author: Abdul Navaz, 2014-10-07, 17:02
[expand - 3 more] - Re: Reduce fails always - Hadoop - [mail # user]
...It was the space issue. It works perfectly after adding this to mapped.sitexml file. mapred.local.dir/mntThanks for the help. :)Thanks & Regards,Abdul NavazResearch AssistantUniversity of Ho...
   Author: Abdul Navaz, 2014-10-07, 06:35
[expand - 8 more] - Re: [Blog] Doubts On CCD-410 Sample Dumps on Ecosystem Projects - Hadoop - [mail # user]
...Hi Pradeep  You are right. Updated the right answers in the blog.This may help anyone thinking about investing in that particular testpackage.On Tue, Oct 7, 2014 at 9:25 AM, Pradee...
   Author: unmesha sreeveni, 2014-10-07, 05:36
[expand - 21 more] - Re: Build failed in Jenkins: Hadoop-Common-trunk due to missing header file - Hadoop - [mail # dev]
...Logged BUILDS-26 to track Colin's suggestion.FYIOn Mon, Oct 6, 2014 at 12:19 PM, Colin McCabe wrote: ...
   Author: Ted Yu, 2014-10-06, 21:27
[expand - 5 more] - Re: Reduce phase of wordcount - Hadoop - [mail # user]
...Nice !mapred.reduce.tasks affects the job (the group of tasks) so it should be at least equal to mapred.tasktracker.reduce.tasks.maximum * <number of nodes>With your setup you allow ea...
   Author: Ulul, 2014-10-06, 20:12
[expand - 4 more] - Re: How to login a user with password to Kerberos Hadoop instead of ticket cache or key tab file ? - Hadoop - [mail # user]
...Larry,Thanks and you have a nice day!Best regards,SophiaOn Mon, Oct 6, 2014 at 12:08 PM, Larry McCay  wrote: ...
   Author: Xiaohua Chen, 2014-10-06, 19:34
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