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https://issues.apache.org/jira/browse/SPARK-19840?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun resolved SPARK-19840.
-----------------------------------
Resolution: Won't Fix
Later, this will be handled better by fixing permanent function correctly
instead.
Please refer https://github.com/apache/spark/pull/17182#discussion_r105774957 .
> 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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