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https://issues.apache.org/jira/browse/SPARK-22024?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16168997#comment-16168997
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Maciej Bryński commented on SPARK-22024:
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[~davies]
Could you look at these PRs ?
Especially on SPARK-22032 and SPARK-22025
> [pySpark] Speeding up internal conversion for Spark SQL
> -------------------------------------------------------
>
> Key: SPARK-22024
> URL: https://issues.apache.org/jira/browse/SPARK-22024
> Project: Spark
> Issue Type: Improvement
> Components: PySpark
> Affects Versions: 2.2.0
> Reporter: Maciej Bryński
>
> fromInternal methods of pySpark datatypes are bottleneck when using pySpark.
> This is umbrella ticket to different optimization in these methods.
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