Konstantinos Karanasos created YARN-6899:
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             Summary: Validate Placement Constraints
                 Key: YARN-6899
                 URL: https://issues.apache.org/jira/browse/YARN-6899
             Project: Hadoop YARN
          Issue Type: Sub-task
            Reporter: Konstantinos Karanasos
            Assignee: Konstantinos Karanasos


This JIRA introduces a validator for {{PlacementConstraint}} objects.
For example, a composite constraint always has to have children constraints, 
the max cardinality of a cardinality constraint cannot be smaller than the min 
cardinality, etc.



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