eclipse can not debug hadoop procedure?

I hit a breakpoint on the code .

Right debug option no debug on hadoop


But the run has run on hadoop options.


there are ways to use the debug mode do ?
------ Solution ---------------------------------------- ----
you can single-step debugging in eclipse MR scheduling code, such as MAIN and RUN

However, for MAP-REDUCE code debugging more trouble , the proposed LZ in MAP-RED method to add custom debugging counters , allowing you to print out the debug code
------ Solution --------------------------------------------
System. out.println is the best debugging