[GitHub] incubator-hivemall issue #137: [HIVEMALL-179][SPARK] Support spark-v2.3

[myui]

Github user myui commented on the issue:

    https://github.com/apache/incubator-hivemall/pull/137
  
    LGTM. 
    
    @maropu Could you merge this PR using `bin/merge_pr.py`?


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