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https://issues.apache.org/jira/browse/SPARK-30103?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Fokko Driesprong resolved SPARK-30103.
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Resolution: Won't Fix
> Remove duplicate schema merge logic
> -----------------------------------
>
> Key: SPARK-30103
> URL: https://issues.apache.org/jira/browse/SPARK-30103
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: Fokko Driesprong
> Priority: Major
>
> There is duplicate logic of merging two schema's. First one in
> StructType.merge() and secondly in catalyst using
> TypeCoercion.findTightestCommonType(). My suggestion is to remove the first
> one.
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