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Posted to issues@spark.apache.org by "Wenchen Fan (JIRA)" <ji...@apache.org> on 2018/11/13 17:54:00 UTC
[jira] [Resolved] (SPARK-25482) Fast equal can not check
reuseSubquery when apply rule about ReuseSubquery
[ https://issues.apache.org/jira/browse/SPARK-25482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wenchen Fan resolved SPARK-25482.
---------------------------------
Resolution: Fixed
Fix Version/s: 3.0.0
Issue resolved by pull request 22518
[https://github.com/apache/spark/pull/22518]
> Fast equal can not check reuseSubquery when apply rule about ReuseSubquery
> --------------------------------------------------------------------------
>
> Key: SPARK-25482
> URL: https://issues.apache.org/jira/browse/SPARK-25482
> Project: Spark
> Issue Type: Bug
> Components: Optimizer, SQL
> Affects Versions: 2.3.1
> Reporter: GuangWeiHong
> Priority: Minor
> Fix For: 3.0.0
>
>
> the datasource filter should be push down, so there will be two subquery on this query
> select count(1) from lineitem where i_partkey > (select max(p_partkey)-1000 from part)
> One of the subquery will apply a rule about ReuseSubquery and generate a new plan, but the new plan will be ignored by method fastEquals() and subquery will be executed two times.
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