Microsoft-CISL/REEF — pull request #857 by markusweimer (2014-06-17 04:13:06+00:00)
Title: Minor refactorings

This pull request contains some refactorings that occured to me while working on another feature branch:

The only functional change is that `JARFileMaker` is now a builder. Beyond that, I added logging or tighter exception handling to `YarnJobSubmissionHandler`, `YARNResourceLaunchHandler`, `YARNResourceReleaseHandler`, `YarnConfigurationConstructor`, `EvaluatorManager`, `EvaluatorManagerFactory` and `Launcher`.