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https://issues.apache.org/jira/browse/HIVE-13076?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hari Sankar Sivarama Subramaniyan resolved HIVE-13076.
------------------------------------------------------
       Resolution: Implemented
    Fix Version/s: 2.1.0

I am closing this jira based on the fact the sub-jiras have been closed. Please 
note that this does not include the CBO changes to perform join elimination 
based on PK/FK "rely novalidate" information. That should be tracked in a 
separate jira and when done is expected to link to this jira.

Thanks
Hari

> Implement FK/PK "rely novalidate" constraints for better CBO
> ------------------------------------------------------------
>
>                 Key: HIVE-13076
>                 URL: https://issues.apache.org/jira/browse/HIVE-13076
>             Project: Hive
>          Issue Type: Improvement
>          Components: CBO, Logical Optimizer
>            Reporter: Ruslan Dautkhanov
>            Assignee: Hari Sankar Sivarama Subramaniyan
>             Fix For: 2.1.0
>
>
> Oracle has "RELY NOVALIDATE" option for constraints.. Could be easier for 
> Hive to start with something like that for PK/FK constraints. So CBO has more 
> information for optimizations. It does not have to actually check if that 
> constraint is relationship is true; it can just "rely" on that constraint.. 
> https://docs.oracle.com/database/121/SQLRF/clauses002.htm#sthref2289
> So it would be helpful with join cardinality estimates, and with cases like 
> this - https://issues.apache.org/jira/browse/HIVE-13019



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