[jira] [Commented] (SPARK-19840) Disallow creating permanent functions with invalid class names

["Dongjoon Hyun (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-19840?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16009348#comment-16009348 ] 

Dongjoon Hyun commented on SPARK-19840:
---------------------------------------

Hi, [~smilegator].
Is there any plan to fix this in 2.2.0?
Or, do you think it is possible to fix this with the first PR in 2.2.0 for now?

> Disallow creating permanent functions with invalid class names
> --------------------------------------------------------------
>
>                 Key: SPARK-19840
>                 URL: https://issues.apache.org/jira/browse/SPARK-19840
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.1.0
>            Reporter: Dongjoon Hyun
>
> Currently, Spark raises exceptions on creating invalid **temporary** functions, but doesn't for **permanent** functions. This issue aims to disallow creating permanent functions with invalid class names.
> *BEFORE*
> {code}
> scala> sql("CREATE TEMPORARY FUNCTION function_with_invalid_classname AS 'org.invalid'").show
> java.lang.ClassNotFoundException: org.invalid at 
> ...
> scala> sql("CREATE FUNCTION function_with_invalid_classname AS 'org.invalid'").show
> ++
> ||
> ++
> ++
> scala> sql("show functions like 'function_*'").show(false)
> +---------------------------------------+
> |function                               |
> +---------------------------------------+
> |default.function_with_invalid_classname|
> +---------------------------------------+
> scala> sql("select function_with_invalid_classname()").show
> org.apache.spark.sql.AnalysisException: Undefined function: 'function_with_invalid_classname'. This function is neither a registered temporary function nor a permanent function registered in the database 'default'.; line 1 pos 7
> {code}
> *AFTER*
> {code}
> scala> sql("CREATE FUNCTION function_with_invalid_classname AS 'org.invalid'").show
> java.lang.ClassNotFoundException: org.invalid
> {code}



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