There is no such a counter in default Hadoop implementation
you can instrument your own code in JobInProgress.java to calculate it,
there is also an implemented counter in JobInProgress, MAP_SLOTS_MILLS, considering both the map tasks occupying multiple slots, but this value also increase when the task is failed,
School of Computer Science,
On Monday, 12 November, 2012 at 6:14 PM, Samaneh Shokuhi wrote:
> I need to do some experience on hadoop source code.
> i have modified part of it in MapTask.java class and need to compare the
> response time for mapper /job before and after modification .Is it
> reported somewhere to see that?