Murat Ali Bayir wrote:
Hi everbody, Although I change the number of mappers in hadoop-site.xml and use job.setNumMapTasks method the system gives another number as a number of mapper, the problem only occurs for number of mapper, number of reducers works correctly. What I have to do for setting the number of mappers in the system?
Any value that you put in hadoop-site.xml will always override any other config settings, even those set programatically in job.setNumMapTasks. You should remove these settings from hadoop-site, and put them into mapred-default.xml.
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