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From Alberto Luengo Cabanillas <cabi...@gmail.com>
Subject Re: TWO QUESTIONS ABOUT LOGS & DEBUGGING IN HADOOP
Date Tue, 03 Nov 2009 14:38:30 GMT
Thanks for the reply,. I´ll try your solution.

2009/11/3 goutham patnaik <goutham.patnaik@gmail.com>

> Alberto,
>
> Are you looking to write some java code that prints the contents of a file
> in HDFS ? If so, take a look at IOUtils.copyBytes (IOUtils is in the
> package
> hadoop.io.IOUtils) As an output stream, you could just use System.out
>
> heres documentation on IOUtils:
>
>
> http://hadoop.apache.org/common/docs/current/api/org/apache/hadoop/io/IOUtils.html
>
>
> hope that helps
>
> Goutham
>
> You can print the content of a file
>
> On Sun, Nov 1, 2009 at 8:55 AM, Alberto Luengo Cabanillas <
> cabiwan@gmail.com
> > wrote:
>
> > Hi everyone! In a project involving Hadoop (0.20.1) I´m working, I´d need
> > to
> > know if I´m reading properly the content of a file located in the HDFS.
> > Beside the try...catch block, is there any other option for printing
> values
> > in the console (in a similar way standard IO Java mechanisms do, like
> > System.out.println("the variable is ", var))?
> > Another thing, is there a simply way to debug Hadoop applications?
> > (actually
> > I´m working in pseudo-distributed mode, for developing purposes).
> > Thanks a lot in advance.
> >
> > --
> > Alberto
> >
>



-- 
Alberto

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