[jira] [Created] (MADLIB-1161) DT: Trees trained by MADlib < 1.12 fail when predicted on 1.12

["Rahul Iyer (JIRA)" <ji...@apache.org>]

Rahul Iyer created MADLIB-1161:
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             Summary: DT: Trees trained by MADlib < 1.12 fail when predicted on 1.12
                 Key: MADLIB-1161
                 URL: https://issues.apache.org/jira/browse/MADLIB-1161
             Project: Apache MADlib
          Issue Type: Bug
          Components: Module: Decision Tree
            Reporter: Rahul Iyer
             Fix For: v2.0


Report from Scott Gai

After upgrade madlib package from 1.11 to 1.12, the tree decision modles which were trained prior to upgrade started to fail with errors like below
{code}
ERROR: KeyError: 'null_proxy' (plpython.c:4656) CONTEXT: Traceback (most recent call last): PL/Python function "tree_predict", line 19, in <module> return decision_tree.tree_predict(**globals()) PL/Python function "tree_predict", line 1759, in tree_predict PL/Python function "tree_predict" ********** Error ********** ERROR: KeyError: 'null_proxy' (plpython.c:4656) SQL state: XX000 Context: Traceback (most recent call last): PL/Python function "tree_predict", line 19, in <module> return decision_tree.tree_predict(**globals()) PL/Python function "tree_predict", line 1759, in tree_predict PL/Python function "tree_predict"
{code}




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