In my map function, I need to know the number of reducer, the code segment in my program like
this:
JobConf job = new JobConf(driverClass.class);
int numReducer=job.getNumReduceTasks();
but the function invocation job.getNumReduceTasks() always returns the value of "1". I have
tested many times: In driver function, I set the number of reducer to 2 using the following
statements:
JobConf job =new JobConf(driverClass.class);
job.setNumReduceTasks(2);
As a result, the reducers' output file number is 2, so I know the statements above worked,
but what I get in map function is still to be "1". How can I get the right number of reducer
in map function? thanks!
