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https://issues.apache.org/jira/browse/SPARK-16406?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Herman van Hovell resolved SPARK-16406.
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Resolution: Fixed
Fix Version/s: 2.4.0
> Reference resolution for large number of columns should be faster
> -----------------------------------------------------------------
>
> Key: SPARK-16406
> URL: https://issues.apache.org/jira/browse/SPARK-16406
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.0.0
> Reporter: Herman van Hovell
> Assignee: Herman van Hovell
> Priority: Major
> Fix For: 2.4.0
>
>
> Resolving columns in a LogicalPlan on average takes n / 2 (n being the number
> of columns). This gets problematic as soon as you try to resolve a large
> number of columns (m) on a large table: O(m * n / 2)
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