Hadoop 0.21 :: job.getCounters() returns null?

[Felix Halim]

I tried hadoop 0.21 release candidate.

job.waitForCompletion(true);
Counters ctrs = job.getCounters();
// here ctrs is null


In the previous hadoop version 0.20.2 it worked fine for all times.

Is this a bug in 0.21 ?
Or i'm missing some settings?

Thanks,

Felix Halim