[SLING-2979] Add support for running scheduled task on specific instances

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Commons Scheduler 2.4.0
• Component/s: Commons
• Assignee: Carsten Ziegeler
• Reporter: Carsten Ziegeler
• Created: 25/Jul/13 13:57
• Updated: 18/Dec/15 04:32
• Resolved: 26/Jul/13 10:11

Description

With the new topology api we have support for leader election. In many cases scheduled tasks should only run on a single instance in a cluster. So far this can only be done by manually adding the task through the Scheduler interface but not with the whiteboard support.
We should add a new property scheduler.leaderonly which defaults to false but can be set to true. IN this case the task is only started on the leader.

Issue Links

• is related to: SLING-3358 Add support for running scheduled tasks only on instances with a specific runmode set
• is related to: SLING-5387 Provide support for running singleton jobs on non leader cluster nodes also