[YARN-7763] Allow Constraints specified in the SchedulingRequest to override application level constraints

• Type: Sub-task
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 3.1.0
• Target Version/s: 3.1.0
• Assignee: Weiwei Yang
• Reporter: Wangda Tan
• Created: 16/Jan/18 23:27
• Updated: 31/Jan/18 17:35
• Resolved: 22/Jan/18 03:13

Description

As I mentioned on YARN-6599, we will add SchedulingRequest as part of the PlacementConstraintUtil method and both of processor/scheduler implementation will use the same logic. The logic looks like:

PlacementConstraint pc = schedulingRequest.getPlacementConstraint();
If (pc == null) {
  pc = PlacementConstraintMgr.getPlacementConstraint(schedulingRequest.getAllocationTags());
}

// Do placement constraint match ...