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Posted to issues@spark.apache.org by "angerszhu (JIRA)" <ji...@apache.org> on 2019/05/05 03:47:00 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 ]
angerszhu updated SPARK-27602:
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Attachment: image-2019-05-05-11-46-41-240.png
> 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: 2.2.0, 2.3.0, 2.4.0
> 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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