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https://issues.apache.org/jira/browse/SPARK-23122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16354813#comment-16354813
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Apache Spark commented on SPARK-23122:
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User 'gatorsmile' has created a pull request for this issue:
https://github.com/apache/spark/pull/20523
> Deprecate register* for UDFs in SQLContext and Catalog in PySpark
> -----------------------------------------------------------------
>
> Key: SPARK-23122
> URL: https://issues.apache.org/jira/browse/SPARK-23122
> Project: Spark
> Issue Type: Improvement
> Components: PySpark, SQL
> Affects Versions: 2.3.0
> Reporter: Hyukjin Kwon
> Assignee: Hyukjin Kwon
> Priority: Major
> Fix For: 2.3.0
>
>
> Deprecate register* for UDFs in SQLContext and Catalog in PySpark
> Seems we allow many other ways to register UDFs in SQL statements. Some are
> in {{SQLContext}} and some are in {{Catalog}}.
> These are also inconsistent with Java / Scala APIs. Seems we better
> deprecating them and put the logics into {{UDFRegistration}}
> ({{spark.udf.register*}}).
> Please see this discussion too -
> [https://github.com/apache/spark/pull/20217#issuecomment-357134926].
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