Eric Hanson created HIVE-4961:
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             Summary: Create bridge for custom UDFs to operate in vectorized 
mode
                 Key: HIVE-4961
                 URL: https://issues.apache.org/jira/browse/HIVE-4961
             Project: Hive
          Issue Type: Sub-task
            Reporter: Eric Hanson
            Assignee: Eric Hanson


Suppose you have a custom UDF myUDF() that you've created to extend hive. The 
goal of this JIRA is to create a facility where if you run a query that uses 
myUDF() in an expression, the query will run in vectorized mode.

This would be a general-purpose bridge for custom UDFs that users add to Hive. 
It would work with existing UDFs.

I'm considering a separate JIRA for a new kind of custom UDF implementation 
that is vectorized from the beginning, to optimize performance. That is not 
covered by this JIRA.

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