[jira] [Updated] (SPARK-15752) Optimize metadata only query that has an aggregate whose children are deterministic project or filter operators

["Lianhui Wang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-15752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lianhui Wang updated SPARK-15752:
---------------------------------
    Summary: Optimize metadata only query that has an aggregate whose children are deterministic project or filter operators  (was: support optimization for metadata only queries)

> Optimize metadata only query that has an aggregate whose children are deterministic project or filter operators
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-15752
>                 URL: https://issues.apache.org/jira/browse/SPARK-15752
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Lianhui Wang
>
> when query only use metadata (example: partition key), it can return results based on metadata without scaning files. Hive did it in HIVE-1003.
> design document:
> https://docs.google.com/document/d/1Bmi4-PkTaBQ0HVaGjIqa3eA12toKX52QaiUyhb6WQiM/edit?usp=sharing



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