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https://issues.apache.org/jira/browse/SPARK-22032?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-22032.
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Resolution: Fixed
Fix Version/s: 2.3.0
Issue resolved by pull request 19249
[https://github.com/apache/spark/pull/19249]
> Speed up StructType.fromInternal
> --------------------------------
>
> Key: SPARK-22032
> URL: https://issues.apache.org/jira/browse/SPARK-22032
> Project: Spark
> Issue Type: Sub-task
> Components: PySpark
> Affects Versions: 2.2.0
> Reporter: Maciej Bryński
> Fix For: 2.3.0
>
>
> StructType.fromInternal is calling f.fromInternal(v) for every field.
> We can use needConversion method to limit the number of function calls.
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