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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2016/03/14 20:24:33 UTC

[jira] [Commented] (SPARK-13871) Add support for inferring filters from data constraints

    [ https://issues.apache.org/jira/browse/SPARK-13871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15193965#comment-15193965 ] 

Apache Spark commented on SPARK-13871:
--------------------------------------

User 'sameeragarwal' has created a pull request for this issue:
https://github.com/apache/spark/pull/11665

> Add support for inferring filters from data constraints
> -------------------------------------------------------
>
>                 Key: SPARK-13871
>                 URL: https://issues.apache.org/jira/browse/SPARK-13871
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Sameer Agarwal
>            Priority: Minor
>
> Now that we have an infrastructure for propagating data constraints, we should generalize the NullFiltering optimizer rule in catalyst to InferFiltersFromConstraints that can automatically infer all relevant filters based on an operator's constraints while making sure of 2 things:
> (a) no redundant filters are generated, and 
> (b) filters that do not contribute to any further optimizations are not generated.



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