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https://issues.apache.org/jira/browse/SPARK-30339?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhenhua Wang updated SPARK-30339:
---------------------------------
    Fix Version/s: 2.4.5

> Avoid to fail twice in function lookup
> --------------------------------------
>
>                 Key: SPARK-30339
>                 URL: https://issues.apache.org/jira/browse/SPARK-30339
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.4.5, 3.0.0
>            Reporter: Zhenhua Wang
>            Assignee: Zhenhua Wang
>            Priority: Minor
>             Fix For: 2.4.5, 3.0.0
>
>
> Currently if function lookup fails, spark will give it a second chance by 
> casting decimal type to double type. But for cases where decimal type doesn't 
> exist, it's meaningless to lookup again and cause extra cost like unnecessary 
> metastore access. We should throw exceptions directly in these cases.



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