[jira] [Assigned] (SPARK-28127) Micro optimization on TreeNode's mapChildren method

["Apache Spark (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-28127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-28127:
------------------------------------

    Assignee:     (was: Apache Spark)

> Micro optimization on TreeNode's mapChildren method
> ---------------------------------------------------
>
>                 Key: SPARK-28127
>                 URL: https://issues.apache.org/jira/browse/SPARK-28127
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Yesheng Ma
>            Priority: Major
>
> The {{mapChildren}} method in the {{TreeNode}} class is commonly used. In this method, there's a if statement checking non-empty children. However, there's a cached lazy val {{containsChild}}, which avoids unnecessary computation since this {{containsChild}} is used in other methods anyway.



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