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[expand - 1 more] - Re: File Reloading - MapReduce - [mail # user]
...I do not see Raj's response but first, yes you can overwrite data (file) as many times as you want at the same location in HDFS/Hadoop. Secondly, you say that the file is small and you indee...
   Author: Shahab Yunus, 2013-05-31, 15:59
Re: Problem in uploading file in WebHDFS - MapReduce - [mail # user]
...If possible can you share what was the root cause? Thanks,  -Shahab  On Saturday, May 25, 2013, Mohammad Mustaqeem  wrote:  ...
   Author: Shahab Yunus, 2013-05-26, 14:56
Re: Shuffle phase replication factor - MapReduce - [mail # user]
...As mentioned by Bertrand, Hadoop, The Definitive Guide, is well... really definitive :) place to start. It is pretty thorough for starts and once you are gone through it, the code will start...
   Author: Shahab Yunus, 2013-05-22, 14:37
Re: ETL Tools - MapReduce - [mail # user]
...For batch imports, I would also suggest Sqoop. Very easy to use, specially if you have mySql into the play. I have not used Sqoop 2 but that is suppose to add enterprise level robustness and...
   Author: Shahab Yunus, 2013-05-21, 16:22
Re: JobClient: Error reading task output - after instituting a DNS server - MapReduce - [mail # user]
...HI David. an you explain in a bit more detail what was the issue? Thanks.  Shahab   On Tue, May 14, 2013 at 2:29 AM, David Parks  wrote:  ...
   Author: Shahab Yunus, 2013-05-14, 11:55
Re: Number of records in an HDFS file - MapReduce - [mail # user]
...Not terribly efficient but at the top of my head: GROUP ALL and then do a COUNT (or COUNT (*). You can implement a follow-up script or add this in the existing script once the file has been ...
   Author: Shahab Yunus, 2013-05-13, 18:27
Re: question about combiner - MapReduce - [mail # user]
...@Kishore, Agreed but but shouldn't 'Reduce shuffle bytes' count decrease with the use of Combiners?  Regards, Shahab   On Fri, May 10, 2013 at 2:00 PM, Kishore  wrote:  ...
   Author: Shahab Yunus, 2013-05-10, 18:08
Re: hadoop map-reduce errors - MapReduce - [mail # user]
...Have your checked your connection settings to the MySQL DB? Where and how are you passing the connection properties for the database? Is it accessible from the machine you are running this? ...
   Author: Shahab Yunus, 2013-05-10, 12:42
Re: Rack Aware Hadoop cluster - MapReduce - [mail # user]
...core-site.xml  http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/core-default.xml   On Wed, May 8, 2013 at 9:43 AM, Mohammad Mustaqeem wrote:  ...
   Author: Shahab Yunus, 2013-05-08, 13:52
[expand - 2 more] - Re: VersionInfoAnnotation Unknown for Hadoop/HBase - MapReduce - [mail # user]
...Yes, this indeed seem to be the case. After running java -version and seeing 1.5 it rung a bell because all our servers (as far as I knew) were 1.6 or above. So I never thought that this wou...
   Author: Shahab Yunus, 2013-04-29, 15:22
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