[jira] [Created] (TAJO-2127) Use Type instead of DataType for EvalNode

[Hyunsik Choi (JIRA)]

Hyunsik Choi created TAJO-2127:
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             Summary: Use Type instead of DataType for EvalNode
                 Key: TAJO-2127
                 URL: https://issues.apache.org/jira/browse/TAJO-2127
             Project: Tajo
          Issue Type: Improvement
            Reporter: Hyunsik Choi
             Fix For: 0.12.0


See TAJO-2042 and TAJO-2043. This issue will change the return type of 
EvalNode::getValueType() to be org.apache.tajo.type.Type and its related code. 
Also, I'll some converter to order to keep existing APIs.



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