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From "Robert Roland (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-4519) JDBC getColumnTypeName() should respond with the Hive-specifc type name for ARRAY, STRUCT and MAP
Date Tue, 07 May 2013 23:47:17 GMT
Robert Roland created HIVE-4519:
-----------------------------------

             Summary: JDBC getColumnTypeName() should respond with the Hive-specifc type name
for ARRAY, STRUCT and MAP
                 Key: HIVE-4519
                 URL: https://issues.apache.org/jira/browse/HIVE-4519
             Project: Hive
          Issue Type: Bug
          Components: JDBC
    Affects Versions: 0.10.0
            Reporter: Robert Roland


Per the Javadocs for ResultSetMetaData#getColumnTypeName():

"type name used by the database. If the column type is a user-defined type, then a fully-qualified
type name is returned."

Hive's type for array, struct and map is not String. It is array, struct or map, using a JSON
string serialization. Returning the Hive type here will allow you to programmatically determine
if you should parse the value in the ResultSet as JSON.

ResultSetMetaData#getColumnType() should potentially return OTHER to indicate the column is
a database-specific return type.

This would replace the fix provided HIVE-1378. 

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