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https://issues.apache.org/jira/browse/SPARK-30350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Takeshi Yamamuro resolved SPARK-30350.
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Fix Version/s: 3.0.0
Assignee: Kengo Seki
Resolution: Fixed
Resolved by
[https://github.com/apache/spark/pull/27005|https://github.com/apache/spark/pull/27005#pullrequestreview-336522702]
> Fix ScalaReflection to use an empty array for getting its class object
> ----------------------------------------------------------------------
>
> Key: SPARK-30350
> URL: https://issues.apache.org/jira/browse/SPARK-30350
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Kengo Seki
> Assignee: Kengo Seki
> Priority: Trivial
> Fix For: 3.0.0
>
>
> {{o.a.s.sql.catalyst.ScalaReflection.arrayClassFor()}} uses
> {{java.lang.reflect.Array.newInstance()}} to get the class object of an array
> as follows, but a zero-length array is enough for that purpose.
> {code}
> java.lang.reflect.Array.newInstance(elementType, 1).getClass
> {code}
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