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https://issues.apache.org/jira/browse/SPARK-43131?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun updated SPARK-43131:
----------------------------------
    Fix Version/s:     (was: 3.5.0)
                       (was: 3.4.1)
                       (was: 3.3.3)

> Add labels to identify UDF 
> ---------------------------
>
>                 Key: SPARK-43131
>                 URL: https://issues.apache.org/jira/browse/SPARK-43131
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.2.0
>            Reporter: Ahmed Hussein
>            Priority: Major
>
> I wish there is a convenient way to report the UDFs executed by spark 
> application. This is a useful information to analyze the performance and 
> possible optimizations.
> Given an application eventlog, I'm not seeing anything in the plans that can 
> easily identify UDFs.
> I see that SPARK-34388  added "source" to the expressionInfo, but this 
> extra-info is not propagated to the "explain" or the eventlog.
> I suggest that UDF shows in the eventlog as something like 
> {code:scala}
> explain sql("SELECT myUdf1(myUdf2(1))"))
> myUdf1#scalaUDF(myUdf2#scalaUDF(1))
> {code}



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