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Harsh J commented on MAPREDUCE-5130: ------------------------------------ bq. mapreduce.map/reduce.child.java.opts These are on purpose. If we added defaults, they would override the mapred.child.java.opts being set by clients today and break compatibility. Is the list for 1.x or trunk? Cause I see some of these other options on trunk's mapred-default.xml? > Add missing job config options to mapred-default.xml > ---------------------------------------------------- > > Key: MAPREDUCE-5130 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-5130 > Project: Hadoop Map/Reduce > Issue Type: Improvement > Reporter: Sandy Ryza > Assignee: Sandy Ryza > > I came across that mapreduce.map.child.java.opts and > mapreduce.reduce.child.java.opts were missing in mapred-default.xml. I'll do > a fuller sweep to see what else is missing before posting a patch. > List so far: > mapreduce.map/reduce.child.java.opts > mapreduce.map/reduce.memory.mb > mapreduce.map/reduce.log.level > mapreduce.job.jvm.numtasks -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira