Renamed ClusterScheduler to TaskSchedulerImpl for yarn and new-yarn
Renamed ClusterScheduler to TaskSchedulerImpl for yarn and new-yarn
Avoid a lump of coal (NPE) in JobProgressListener's stocking.
 fix this import order
Merge pull request #296 from witgo/master

Renamed ClusterScheduler to TaskSchedulerImpl for yarn and new-yarn package
Merge pull request #295 from markhamstra/JobProgressListenerNPE

Avoid a lump of coal (NPE) in JobProgressListener's stocking.