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Re: Development Branch for the Hadoop Next Generation - Hadoop - [mail # general]
...0.23 is trunk right now. 0.22 was branched for stabilization before release .   On 6/13/11 9:14 AM, "Marcos Ortiz"  wrote:  On 06/13/2011 09:01 AM, Harsh J wrote: /),   G...
   Author: Robert Evans, 2011-06-13, 13:58
Re: Automatic line number in reducer output - Hadoop - [mail # user]
...In this case you probably want two different classes.  You can have the bas e Reducer class that adds in the line count, and then subclass it for the c ombiner, that sets a flag to not ...
[+ more]    Author: Robert Evans, 2011-06-10, 14:31
Re: Linear scalability question - Hadoop - [mail # user]
...Shantian,  You are correct.  The other big factor in this is the cost of connections b etween the Mappers and the Reducers.  With N mappers and M reducers you wil l make M*N c...
   Author: Robert Evans, 2011-06-09, 14:23
Re: DistributedCache - Hadoop - [mail # user]
...I think the issue you are seeing is because the distributed cache is not se t up by default to create symlinks to the files it pulls over.  If you want  to access them through syml...
   Author: Robert Evans, 2011-06-09, 13:49
Re: Hadoop project - help needed - Hadoop - [mail # user]
...Parismav,  So you are more or less trying to scrape some data in a distributed way.  W ell there are several things that you could do, just be careful I am not su re the terms of s...
   Author: Robert Evans, 2011-05-31, 15:54
Re: Sorting ... - Hadoop - [mail # user]
...Also if you want something that is fairly fast and a lot less dev work to g et going you might want to look at pig.  They can do a distributed order by  that is fairly good.  ...
   Author: Robert Evans, 2011-05-26, 15:34
Re: Applications creates bigger output than input? - Hadoop - [mail # user]
...I'm not sure if this has been mentioned or not but in Machine Learning with  text based documents, the first stage is often a glorified word count acti on.  Except much of the time...
   Author: Robert Evans, 2011-05-19, 14:57
Re: current line number as key? - Hadoop - [mail # user]
...You are correct, that there is no easy and efficient way to do this.  You could create a new InputFormat that derives from FileInputFormat that m akes it so the files do not split, and ...
   Author: Robert Evans, 2011-05-18, 19:18
Re: FileSystem API - Moving files in HDFS - Hadoop - [mail # user]
...If they are lots of large files, and you need to copy them quickly, i.e. No t have all the data go through a single machine, you can use hadoop distcp  too.   On 5/14/11 12:49 AM, ...
   Author: Robert Evans, 2011-05-16, 17:06
Re: Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException - Hadoop - [mail # user]
...What version of hadoop are you using?   On 5/14/11 9:37 AM, "Lạc Trung"  wrote:  Hello everybody !    This exception was thrown when I tried to copy a file from loca...
   Author: Robert Evans, 2011-05-16, 17:03
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