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Posted to issues@spark.apache.org by "Dongjoon Hyun (JIRA)" <ji...@apache.org> on 2019/06/09 20:52:00 UTC

[jira] [Updated] (SPARK-27602) SparkSQL CBO can't get true size of partition table after partition pruning

     [ https://issues.apache.org/jira/browse/SPARK-27602?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dongjoon Hyun updated SPARK-27602:
----------------------------------
    Affects Version/s:     (was: 2.4.0)
                           (was: 2.3.0)
                           (was: 2.2.0)
                       3.0.0

> SparkSQL CBO can't get true size of partition table after partition pruning
> ---------------------------------------------------------------------------
>
>                 Key: SPARK-27602
>                 URL: https://issues.apache.org/jira/browse/SPARK-27602
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: angerszhu
>            Priority: Major
>         Attachments: image-2019-05-05-11-46-41-240.png
>
>
> When I want to do extract a cost of one sql for myself's cost framework,  I found that CBO  can't get true size of partition table  since when partition pruning is true. we just need corresponding partition's size. It just use the tables's statistic.



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