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From viirya <...@git.apache.org>
Subject [GitHub] spark pull request: [SPARK-13903][SQL] Modify output nullability w...
Date Tue, 15 Mar 2016 09:26:37 GMT
GitHub user viirya opened a pull request:

    https://github.com/apache/spark/pull/11722

    [SPARK-13903][SQL] Modify output nullability with constraints for Join operator

    ## What changes were proposed in this pull request?
    
    JIRA: https://issues.apache.org/jira/browse/SPARK-13903
    
    With constraints and optimization, we can make sure some outputs of a Join operator are
not nulls. We should modify output nullability accordingly. We can use this information in
later execution to avoid null checking.
    
    ## How was this patch tested?
    
    Modified `NullFilteringSuite`.


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/viirya/spark-1 output-nullable-with-constraint

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/spark/pull/11722.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #11722
    
----
commit fb6c8cd182dae1aded07baf59cb185f1afde84e7
Author: Liang-Chi Hsieh <simonh@tw.ibm.com>
Date:   2016-03-15T09:01:04Z

    Modify output nullable with constraint for Join.

----


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