[jira] [Commented] (SPARK-2169) SparkUI.setAppName() has no effect

["Marcelo Vanzin (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-2169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14046468#comment-14046468 ] 

Marcelo Vanzin commented on SPARK-2169:
---------------------------------------

https://github.com/apache/spark/pull/1252

> SparkUI.setAppName() has no effect
> ----------------------------------
>
>                 Key: SPARK-2169
>                 URL: https://issues.apache.org/jira/browse/SPARK-2169
>             Project: Spark
>          Issue Type: Bug
>          Components: Web UI
>    Affects Versions: 1.0.0
>            Reporter: Marcelo Vanzin
>
> {{SparkUI.setAppName()}} does not do anything useful.
> It overwrites the instance's {{appName}} fields, but all places where that field is used have already read that value into their own copies by the time that happens.
> e.g.
> StagePage.scala copies {{parent.appName}} into its own private {{appName}} in the constructor, which is called as part of SparkUI's constructor. So when you call {{SparkUI.setAppName}} it does not overwrite StagePage's copy, and so the UI still shows the old value.



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