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https://issues.apache.org/jira/browse/SPARK-28108?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-28108.
---------------------------------
Resolution: Fixed
Fix Version/s: 3.0.0
Issue resolved by pull request 24910
[https://github.com/apache/spark/pull/24910]
> Simplify OrcFilters
> -------------------
>
> Key: SPARK-28108
> URL: https://issues.apache.org/jira/browse/SPARK-28108
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Gengliang Wang
> Assignee: Gengliang Wang
> Priority: Minor
> Fix For: 3.0.0
>
>
> In #24068, @IvanVergiliev reports that OrcFilters.createBuilder has
> exponential complexity in the height of the filter tree due to the way the
> check-and-build pattern is implemented.
> This is because the same method createBuilder is called twice recursively for
> any children under And/Or/Not nodes, so that inside the first call, the
> second call is called as well(See description in #24068 for details).
> Comparing to the approach in #24068, I propose a very simple solution for the
> issue. We can rely on the result of convertibleFilters, which can build a
> fully convertible tree. With it, we don't need to concern about the children
> of a certain node is not convertible in method createBuilder.
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