You are migrating a cluster from MapReduce version 1 (MRv1) to MapReduce version2
(MRv2) on YARN. To want to maintain your MRv1 TaskTracker slot capacities when you
migrate. What should you do?

A.
Configure mapred.tasktracker.map.tasks.maximum and
mapred.tasktracker.reduce.tasks.maximum ub yarn.site.xml to match your cluster’s
configured capacity set by yarn.scheduler.minimum-allocation

B.
Configure yarn.applicationmaster.resource.memory-mb and
yarn.applicationmaster.cpuvcores so that ApplicationMaster container allocations match the
capacity you require.

C.
You don’t need to configure or balance these properties in YARN as YARN dynamically
balances resource management capabilities on your cluster

D.
Configure yarn.nodemanager.resource.memory-mb and

yarn.nodemanager.resource.cpu-vcores to match the capacity you require under YARN for
each NodeManager