[jira] [Created] (ARROW-1648) C++: Add cast from Dictionary[NullType] to NullType

[Uwe L. Korn (JIRA)]

Uwe L. Korn created ARROW-1648:
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             Summary: C++: Add cast from Dictionary[NullType] to NullType
                 Key: ARROW-1648
                 URL: https://issues.apache.org/jira/browse/ARROW-1648
             Project: Apache Arrow
          Issue Type: New Feature
            Reporter: Uwe L. Korn
             Fix For: 0.8.0


Cleanup after https://issues.apache.org/jira/browse/PARQUET-1121



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