[IMPALA-3955] Remove Scheduler class and rename SimpleScheduler to Scheduler

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Impala 2.6.0
• Fix Version/s: Impala 2.9.0
• Component/s: Backend
• Labels: newbie
• Target Version: Product Backlog
• Assignee: Henry Robinson
• Reporter: Henry Robinson
• Created: 05/Aug/16 21:31
• Updated: 18/Apr/17 20:17
• Resolved: 18/Apr/17 20:17

Description

Just for code cleanliness, it would be good to get rid of the Scheduler interface class. There's only one implementation of the interface (SimpleScheduler), and there only ever has been one. If we ever feel it's necessary to have more than one scheduler implementation, we can introduce an appropriate abstraction at that point.