[HADOOP-9918] Add addIfService() to CompositeService

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.1.0-beta
• Fix Version/s: 2.1.1-beta
• Labels: service
• Target Version/s: 2.1.1-beta
• Hadoop Flags: Reviewed
• Assignee: Karthik Kambatla
• Reporter: Karthik Kambatla
• Created: 29/Aug/13 18:17
• Updated: 03/Nov/14 18:34
• Resolved: 31/Aug/13 02:21

Description

Some YARN and MR classes implement their own version of addIfService(Object object) that adds the service to CompositeService if the object is a service.

It makes more sense to move this helper to CompositeService itself.