[jira] [Commented] (SPARK-4595) Spark MetricsServlet is not worked because of initialization ordering

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

    [ https://issues.apache.org/jira/browse/SPARK-4595?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14224146#comment-14224146 ] 

Apache Spark commented on SPARK-4595:
-------------------------------------

User 'jerryshao' has created a pull request for this issue:
https://github.com/apache/spark/pull/3444

> Spark MetricsServlet is not worked because of initialization ordering
> ---------------------------------------------------------------------
>
>                 Key: SPARK-4595
>                 URL: https://issues.apache.org/jira/browse/SPARK-4595
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 1.2.0
>            Reporter: Saisai Shao
>
> Web UI is initialized before MetricsSystem is started, at that time MetricsSerlvet is not yet created, which will make MetricsServlet fail to register  into web UI. 
> Instead MetricsServlet handler should be added to the web UI after MetricsSystem is started.



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