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The following page has been changed by OwenOMalley: http://wiki.apache.org/lucene-hadoop/HowToDebugMapReducePrograms ------------------------------------------------------------------------------ This can be extremely useful to display debug information about the current record being handled, or setting certain debug flags about the status of the mapper. While running locally on a small data set can find many bugs, large data sets may contain pathological cases that are otherwise unexepcted. This method of debugging can help catch those cases. - == How to debug Hadoop Pipes programs + = How to debug Hadoop Pipes programs = In order to debug Pipes programs you need to keep the downloaded commands.
