hadoop-common-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Ted Dunning <tdunn...@maprtech.com>
Subject Re: Needs a simple answer
Date Thu, 16 Dec 2010 22:49:04 GMT
Maha,

Remember that the mapper is not running on the same machine as the main
class.  Thus local files aren't where you think.

On Thu, Dec 16, 2010 at 1:06 PM, maha <maha@umail.ucsb.edu> wrote:

> Hi all,
>
>   Why the following lines would work in the main class (WordCount) and not
> in Mapper ? even though " myconf " is set in WordCount to point to the
> getConf() returned object.
>
>             try{
>                    FileSystem hdfs = FileSystem.get(wc.WordCount.myconf);
>                    hdfs.copyFromLocalFile(new Path("/Users/file"), new
> Path("/tmp/file"));
>                   }catch(Exception e) { System.err.print("\nError");}
>
>
>  Also, the print statement will never print on console unless it's in my
> run function..
>
>      Appreciate it :)
>
>        Maha
>
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message