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Posted to issues@spark.apache.org by "Sameer Agarwal (JIRA)" <ji...@apache.org> on 2016/03/14 20:23:33 UTC

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

Sameer Agarwal created SPARK-13871:
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             Summary: 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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