Uwe L. Korn created ARROW-2152:

             Summary: [Format] UUID type
                 Key: ARROW-2152
                 URL: https://issues.apache.org/jira/browse/ARROW-2152
             Project: Apache Arrow
          Issue Type: Improvement
          Components: Format
            Reporter: Uwe L. Korn

Add a UUID type that is physically represented as an 128bit fixed sized binary. 
The addition of the type should add the annotation that a value in this column 
is a UUID. The important benefit would be that in the native language object 
models we could return the respective UUID class, e.g. {{java.util.UUID}} in 
Java and {{uuid.UUID}} in Python. For reference, Postgres and Parquet both have 
a UUID type as well do other data system have this small specialization.

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