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How do i directly set the memory for a map task?

Question asked by jacques on Aug 2, 2011
Latest reply on May 8, 2012 by amit
How do I set the memory for a map task directly? 

You seem to ignore -Xmx settings in mapred-site.xml/mapred.map.child.java.opts

Changing mapreduce.tasktracker.reserved.physicalmemory.mb to -1 doesn't help.  And it appears that you have built in assumptions that reduce tasks should get more memory than map tasks.  I have read your map reduce tuning page and the answer isn't apparent to me.

Thanks for the help


http://mapr.com/doc/display/MapR/mapred-site.xml#mapred-site.xml-mapreduce.tasktracker.reserved.physicalmemory.mb

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