spark git commit: [SPARK-14830][SQL] Add RemoveRepetitionFromGroupExpressions optimizer.

2016-05-02 Thread marmbrus
Repository: spark Updated Branches: refs/heads/master a35a67a83 -> 6e6320122 [SPARK-14830][SQL] Add RemoveRepetitionFromGroupExpressions optimizer. ## What changes were proposed in this pull request? This PR aims to optimize GroupExpressions by removing repeating expressions. `RemoveRepetiti

spark git commit: [SPARK-14830][SQL] Add RemoveRepetitionFromGroupExpressions optimizer.

2016-05-02 Thread marmbrus
Repository: spark Updated Branches: refs/heads/branch-2.0 1c2082b64 -> 972fd22e3 [SPARK-14830][SQL] Add RemoveRepetitionFromGroupExpressions optimizer. ## What changes were proposed in this pull request? This PR aims to optimize GroupExpressions by removing repeating expressions. `RemoveRepe