title: Retrieve a changed variable from a map/reduce task in hadoop
body: <p>I have a global boolean variable that controls a loop in the main function to determine whether or not to start over.  The decision is made in a reduce where the variable is set to true if a condition is met. Then in the main, if the condition is met it runs the entire program again. This works on one machine but when I try to run it on Amazons EC2 it does not loop through.</p>