[
https://issues.apache.org/jira/browse/SPARK-26375?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Wang, Gang updated SPARK-26375:
-------------------------------
Summary: Rule PruneFileSourcePartitions should be fired before any other
rules based on table statistics (was: Rule PruneFileSourcePartitions should be
fired before any other rules based on data size)
> Rule PruneFileSourcePartitions should be fired before any other rules based
> on table statistics
> -----------------------------------------------------------------------------------------------
>
> Key: SPARK-26375
> URL: https://issues.apache.org/jira/browse/SPARK-26375
> Project: Spark
> Issue Type: Improvement
> Components: Optimizer
> Affects Versions: 2.3.0
> Reporter: Wang, Gang
> Priority: Major
>
> In catalyst, some optimize rules are base on table statistics, like rule
> ReorderJoin, in which star schema is detected, and CostBasedJoinReorder. In
> these rules, statistics accuracy are crucial. While, currently all these
> rules are fired before partition pruning, which may get inaccurate statistics.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
