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From "Konstantinos Karanasos (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (YARN-6621) Validate Placement Constraints
Date Fri, 28 Jul 2017 17:55:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-6621?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Konstantinos Karanasos reassigned YARN-6621:
--------------------------------------------

    Assignee: Konstantinos Karanasos

> Validate Placement Constraints
> ------------------------------
>
>                 Key: YARN-6621
>                 URL: https://issues.apache.org/jira/browse/YARN-6621
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Konstantinos Karanasos
>            Assignee: Konstantinos Karanasos
>
> 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.



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