[jira] [Created] (IMPALA-9478) Runtime profiles should indicate if custom UDFs are being used

["Sahil Takiar (Jira)" <ji...@apache.org>]

Sahil Takiar created IMPALA-9478:
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             Summary: Runtime profiles should indicate if custom UDFs are being used
                 Key: IMPALA-9478
                 URL: https://issues.apache.org/jira/browse/IMPALA-9478
             Project: IMPALA
          Issue Type: Task
            Reporter: Sahil Takiar


Custom UDFs can include arbitrary user code that can cause query slowdown. In order to better diagnose queries with UDF issues, it is first important to know when a query is even using an UDF.

Runtime profiles should list out any custom UDFs used by the query, as well as the library the UDF is loaded from.

For Java UDFs, the full classname of the UDF would be good as well.

Any other metadata associated with the UDF might be useful as well. There are a few things that are printed by {{show functions}}



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