[GitHub] incubator-griffin issue #332: fix a bad practice

[toyboxman]

Github user toyboxman commented on the issue:

    https://github.com/apache/incubator-griffin/pull/332
  
    Hi, @whhe @guoyuepeng 
    
    I submit a new patch to revise, please review again
    
    https://github.com/apache/incubator-griffin/pull/335


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