title: mongoDB how to kill/terminate map_reduce job?
body: <p>I am not sure if this is possible but wanted to know if we have solution for this problem. 
       I have a map_reduce job defined (have taken extra measure to do incremental query so that data set is minimal) if in case it takes long time i want to kill the job either using pymongo API or in mongoDB shell ......and also gracefully delete all the temp tables. Can this be done?</p>