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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2021/07/15 11:43:00 UTC

[jira] [Assigned] (SPARK-36157) TimeWindow expression: apply filter before project

     [ https://issues.apache.org/jira/browse/SPARK-36157?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-36157:
------------------------------------

    Assignee: Apache Spark

> TimeWindow expression: apply filter before project
> --------------------------------------------------
>
>                 Key: SPARK-36157
>                 URL: https://issues.apache.org/jira/browse/SPARK-36157
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL, Structured Streaming
>    Affects Versions: 3.3.0
>            Reporter: Jungtaek Lim
>            Assignee: Apache Spark
>            Priority: Minor
>
> https://github.com/apache/spark/blob/4dfd266b27fea6954593c6b9e3a2819b290f0aec/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala#L3901-L3906
> In the case of tumbling window, we apply project and then filter, while filter is not dependent to project. We can just swap two operator to ensure less rows would be projected if there're some rows being filtered out.



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