spark git commit: [SPARK-14637][SQL] object expressions cleanup

2016-05-02 Thread marmbrus
Repository: spark Updated Branches: refs/heads/master 214d1be4f -> 0513c3ac9 [SPARK-14637][SQL] object expressions cleanup ## What changes were proposed in this pull request? Simplify and clean up some object expressions: 1. simplify the logic to handle `propagateNull` 2. add `propagateNull`

spark git commit: [SPARK-14637][SQL] object expressions cleanup

2016-05-02 Thread marmbrus
Repository: spark Updated Branches: refs/heads/branch-2.0 ccb53a20e -> 1145ea01b [SPARK-14637][SQL] object expressions cleanup ## What changes were proposed in this pull request? Simplify and clean up some object expressions: 1. simplify the logic to handle `propagateNull` 2. add `propagateN