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https://issues.apache.org/jira/browse/HIVE-2482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13726621#comment-13726621
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Ashutosh Chauhan commented on HIVE-2482:
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I usually write end to end tests for new features (mostly for regression 
testing but also to demonstrate what functionality is getting introduced). For 
bug fixes I write junit tests to test the part which I am fixing.
Obviously there are lot more bug fixes than features, so in most circumstances 
junit tests are encouraged, though in this particular instance there are new 
udfs (thus new features) so here end to end tests does make sense. 
                
> Convenience UDFs for binary data type
> -------------------------------------
>
>                 Key: HIVE-2482
>                 URL: https://issues.apache.org/jira/browse/HIVE-2482
>             Project: Hive
>          Issue Type: New Feature
>    Affects Versions: 0.9.0
>            Reporter: Ashutosh Chauhan
>            Assignee: Mark Wagner
>         Attachments: HIVE-2482.1.patch
>
>
> HIVE-2380 introduced binary data type in Hive. It will be good to have 
> following udfs to make it more useful:
> * UDF's to convert to/from hex string
> * UDF's to convert to/from string using a specific encoding
> * UDF's to convert to/from base64 string
> * UDF's to convert to/from non-string types using a particular serde

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