orhankislal opened a new pull request #508:
URL: https://github.com/apache/madlib/pull/508


   JIRA: MADLIB-1442
   
   We noticed that some MADlib modules drop output tables before
   recreating them. This is not a safe assumption since the user might
   put a table name that they actually need by mistake. This commit
   adds checks for existing output tables and removes the drop statements.
   
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   - [ ] Add the module name, JIRA# to PR/commit and description.
   - [ ] Add tests for the change. 
   
   


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