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Posted to issues@spark.apache.org by "Hyukjin Kwon (Jira)" <ji...@apache.org> on 2019/10/08 05:42:13 UTC
[jira] [Resolved] (SPARK-25334) Default SessionCatalog should
support UDFs
[ https://issues.apache.org/jira/browse/SPARK-25334?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hyukjin Kwon resolved SPARK-25334.
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Resolution: Incomplete
> Default SessionCatalog should support UDFs
> ------------------------------------------
>
> Key: SPARK-25334
> URL: https://issues.apache.org/jira/browse/SPARK-25334
> Project: Spark
> Issue Type: Task
> Components: SQL
> Affects Versions: 2.3.1
> Reporter: Tomasz Gawęda
> Priority: Major
> Labels: bulk-closed
>
> SessionCatalog calls registerFunction to add a function to function registry. However, makeFunctionExpression supports only UserDefinedAggregateFunction.
> We should make makeFunctionExpression support UserDefinedFunction, as it's one of functions type.
> Currently we can use persistent functions only with Hive metastore, but "create function" command works also with default SessionCatalog. It sometimes cause user confusion, like in https://stackoverflow.com/questions/52164488/spark-hive-udf-no-handler-for-udaf-analysis-exception/52170519
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