On Nov 3, 2010, at 7:27 PM, David B. Ritch wrote: > The parameter mapred.hosts.exclude has existed in documentation for many > versions, but I do not believe it has ever been implemented in the > actual code. >
mradmin -refreshNodes was added in 0.21. So code definitely exists for it. That said, if you aren't using it now, probably better to just kill the tasktracker.
