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Posted to issues@spark.apache.org by "Dongjoon Hyun (Jira)" <ji...@apache.org> on 2019/11/24 16:31:00 UTC
[jira] [Resolved] (SPARK-24690) Add a new config to control plan
stats computation in LogicalRelation
[ https://issues.apache.org/jira/browse/SPARK-24690?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dongjoon Hyun resolved SPARK-24690.
-----------------------------------
Fix Version/s: 3.0.0
Resolution: Fixed
Issue resolved by pull request 21668
[https://github.com/apache/spark/pull/21668]
> Add a new config to control plan stats computation in LogicalRelation
> ---------------------------------------------------------------------
>
> Key: SPARK-24690
> URL: https://issues.apache.org/jira/browse/SPARK-24690
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.3.1
> Reporter: Takeshi Yamamuro
> Assignee: Takeshi Yamamuro
> Priority: Major
> Fix For: 3.0.0
>
>
> We cannot currently enable StarSchemaDetection.reorderStarJoins because we need to turn off CBO to enable it but StarSchemaDetection internally references LogicalPlan.stats.rowCount.
> This rowCount is used in LogicalRelation if CBO disabled.
> This ticket is to propose a new separate config so that LogicalRelation can use rowCount to compute data statistics.
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