Chengxiang Li created HIVE-7675:
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Summary: Implement native HiveMapFunction
Key: HIVE-7675
URL: https://issues.apache.org/jira/browse/HIVE-7675
Project: Hive
Issue Type: New Feature
Components: Spark
Reporter: Chengxiang Li
Currently, Hive on Spark depend on ExecMapper to execute operator logic, full
stack is like: Spark FrameWork=>HiveMapFunction=>ExecMapper=>Hive operators.
HiveMapFunction is just a thin wrapper of ExecMapper, this introduce several
problems as following:
# ExecMapper is designed for MR single process task mode, it does not work well
under Spark multi-thread task node.
# ExecMapper introduce extra API level restriction.
We need implement native HiveMapFunction, as the bridge between Spark framework
and Hive operators.
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