Thorsten, On Sat, Aug 18, 2007 at 01:18:06PM +0200, Thorsten Schuett wrote:
>Please correct me if I am wrong, but it looks like hadoop is using the rpc >mechanism to copy the map output files to the reduce task (in this case via >the loopback device). i Hadoop uses http to copy map output files, not rpc. >If my assumptions are correct, would it be possible to >read/access the files directly in the "one-node mode"? Please take a look at LocalJobRunner in src/org/apache/hadoop/mapred ... set the jobtracker in your config to 'local' and this happens automatically. (http://wiki.apache.org/lucene-hadoop/HowToDebugMapReducePrograms) Arun >Thanks, > Thorsten
