spark git commit: [SPARK-15452][SQL] Mark aggregator API as experimental

Repository: spark Updated Branches: refs/heads/master 5e1ee2898 -> 201a51f36 [SPARK-15452][SQL] Mark aggregator API as experimental ## What changes were proposed in this pull request? The Aggregator API was introduced in 2.0 for Dataset. All typed Dataset APIs should still be marked as experi

spark git commit: [SPARK-15452][SQL] Mark aggregator API as experimental

Repository: spark Updated Branches: refs/heads/branch-2.0 d7bf318a0 -> 4148a9c2c [SPARK-15452][SQL] Mark aggregator API as experimental ## What changes were proposed in this pull request? The Aggregator API was introduced in 2.0 for Dataset. All typed Dataset APIs should still be marked as ex