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https://issues.apache.org/jira/browse/SPARK-30516?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hu Fuwang updated SPARK-30516:
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    Summary: statistic estimation of FileScan should take partitionFilters and 
partition number into account  (was: FileScan.estimateStatistics does not take 
partitionFilters and partition number into account)

> statistic estimation of FileScan should take partitionFilters and partition 
> number into account
> -----------------------------------------------------------------------------------------------
>
>                 Key: SPARK-30516
>                 URL: https://issues.apache.org/jira/browse/SPARK-30516
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.1.0
>            Reporter: Hu Fuwang
>            Priority: Major
>
> Currently, FileScan.estimateStatistics does not take partitionFilters and 
> partition number into account, which may lead to bigger sizeInBytes. It 
> should be reasonable to change it to involve partitionFilters and partition 
> number when estimating the statistics.



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