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https://issues.apache.org/jira/browse/SPARK-22945?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-22945.
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Resolution: Fixed
Fix Version/s: 2.3.0
Issue resolved by pull request 20141
[https://github.com/apache/spark/pull/20141]
> add java UDF APIs in the functions object
> -----------------------------------------
>
> Key: SPARK-22945
> URL: https://issues.apache.org/jira/browse/SPARK-22945
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Wenchen Fan
> Assignee: Wenchen Fan
> Fix For: 2.3.0
>
>
> Currently Scala users can use UDF like
> {code}
> val foo = udf((i: Int) => Math.random() + i).asNondeterministic
> df.select(foo('a))
> {code}
> Python users can also do it with similar APIs. However Java users can't do
> it, we should add Java UDF APIs in the functions object.
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