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https://issues.apache.org/jira/browse/SPARK-8141?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cheng Lian resolved SPARK-8141.
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Resolution: Fixed
Fix Version/s: 1.4.1
1.5.0
Issue resolved by pull request 6687
[https://github.com/apache/spark/pull/6687]
> Precompute datatypes for partition columns and reuse it
> -------------------------------------------------------
>
> Key: SPARK-8141
> URL: https://issues.apache.org/jira/browse/SPARK-8141
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.4.0
> Reporter: Liang-Chi Hsieh
> Assignee: Liang-Chi Hsieh
> Fix For: 1.5.0, 1.4.1
>
>
> spec.partitionColumns.map(_.dataType) re-runs for each Partition in
> HadoopFsRelation. When there are many partitions, it costs too much
> unnecessary time.
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