setQueueName, setSchedulingInfo, and setQueueState were public in MR1, but are private int MR2. They should be made public with InterfaceAudience.Private.
getQueueState was public, but is now package private. It has been replaced with getState, which returns a QueueState instead of a String. It should be made public and deprecated, with a documentation reference to getState.
Should the other setter methods in JobQueueInfo that were not in MR1 be changed to public/InterfaceAudience.Private for consistency?