1> Can I change the heap size for the job tracker only if I am using version 1.0.2?
2> If so, would you please say what exact line I should put in the hadoop-evv.sh and where ? Should I set the value with a number or use the Xmx notion? I mean which one is the correct way export HADOOP_HEAPSIZE=2000 or export HADOOP_HEAPSIZE="-Xmx2000m" 3> Do I need to restart the job tracker node or call start-mapred.sh to make the heap size change to take in effect? Is there anything else I need to do to make the change to be applied?
