[jira] [Commented] (HIVE-4519) JDBC getColumnTypeName() should respond with the Hive-specifc type name for ARRAY, STRUCT and MAP

["Robert Roland (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-4519?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13692600#comment-13692600 ] 

Robert Roland commented on HIVE-4519:
-------------------------------------

Can I get a code review, please? Thanks!
                
> 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, 0.11.0
>            Reporter: Robert Roland
>         Attachments: HIVE-4519.1.patch.txt
>
>
> 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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