We've been against these 'features' since it leads to very bad behaviour across the cluster with multiple apps/users etc.
What is your use-case i.e. what are you trying to achieve with this? thanks, Arun On May 3, 2012, at 5:59 AM, Radim Kolar wrote: > if plugin system for AM is overkill, something simpler can be made like: > > maximum number of mappers per node > maximum number of reducers per node > > maximum percentage of non data local tasks > maximum percentage of rack local tasks > > and set this in job properties. -- Arun C. Murthy Hortonworks Inc. http://hortonworks.com/
