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MapReduce, mail # user - Different ways of configuring the memory to the TaskTracker child process (Mapper and Reduce Tasks)


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Different ways of configuring the memory to the TaskTracker child process (Mapper and Reduce Tasks)
Praveen Sripati 2011-11-06, 15:17
Hi,

What is the difference between setting the mapred.job.map.memory.mb and
mapred.child.java.opts using -Xmx to control the maximum memory used by a
Mapper and Reduce task? Which one takes precedence?

Thanks,
Praveen