[SLING-6823] Use Timer instead of scheduler for delayed execution

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Event 4.2.4
• Component/s: Event
• Assignee: Carsten Ziegeler
• Reporter: Carsten Ziegeler
• Created: 03/May/17 05:39
• Updated: 20/Sep/17 11:17
• Resolved: 22/May/17 05:12

Description

Currently, the scheduler is used in some places to delay some execution. As this execution is intended to be run at the delayed time, it is not optimal to rely on the scheduler, especially as the scheduler is resource constraint (by its pool).
We could simply use java's Timer for this. Affected classes are:
JobManagerConfiguration (2 occurences)
JobQueueImpl (1 occurence)
We can then also remove the scheduler from QueueServices