[YARN-6621] Validate Placement Constraints

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Konstantinos Karanasos
• Reporter: Konstantinos Karanasos
• Created: 18/May/17 01:29
• Updated: 03/Feb/19 03:23

Description

This library will be used to validate placement constraints.

It can serve multiple validation purposes:
1) Check if the placement constraint has a valid form (e.g., a cardinality constraint should not have an associated target expression, a DELAYED_OR compound expression should only appear in specific places in a constraint tree, etc.)
2) Check if the constraints given by a user are conflicting (e.g., cardinality more than 5 in a host and less than 3 in a rack).
3) Check that the constraints are properly added in the Placement Constraint Manager.

Issue Links

• relates to: YARN-7800 Bind node constraint once a container is proposed to be placed on this node