pass mapred.map.tasks to pig

[Qiming He]

Hi all,

Is there any way to pass -Dmapred.map.tasks to pig? I notice that my
multi-core nodes are under-utilized with pig job, only processor is busy all
the time.
I notice mapred.map.tasks is set to # of nodes from Hadoop job console. I
try to change config under $HADOOP/conf, does not seem to work. Overwritten
by Pig??

Please advise. Thanks