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From Apache Wiki <wikidi...@apache.org>
Subject [Lucene-hadoop Wiki] Update of "HowToDebugMapReducePrograms" by HairongKuang
Date Fri, 15 Sep 2006 21:11:34 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Lucene-hadoop Wiki" for change notification.

The following page has been changed by HairongKuang:
http://wiki.apache.org/lucene-hadoop/HowToDebugMapReducePrograms

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   3. Run on a big cluster. Recently, I added the keep.failed.task.files config variable that
tells the
      system to keep files for tasks that fail. This leaves "dead" files around that you can
debug with. 
      On the node with the failed task, go to the task tracker's local directory and cd to
-     ''<local>''/taskTracker/''<taskid>'' and run
+     ''<local>''/taskTracker/''<taskid>''/work and run
      {{{
  % hadoop org.apache.hadoop.mapred.IsolationRunner job.xml
      }}}

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