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https://issues.apache.org/jira/browse/SPARK-2100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14032803#comment-14032803
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Sean Owen commented on SPARK-2100:
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Tomcat and Jetty classes don't overlap -- do you mean the Servlet API classes?
that's a different known issue.
> Allow users to disable Jetty Spark UI in local mode
> ---------------------------------------------------
>
> Key: SPARK-2100
> URL: https://issues.apache.org/jira/browse/SPARK-2100
> Project: Spark
> Issue Type: Improvement
> Reporter: DB Tsai
>
> Since we want to use Spark hadoop APIs in local mode for design time to
> explore the first couple hundred lines of data in HDFS. Also, we want to use
> Spark in our tomcat application, so starting a jetty UI will make our tomcat
> unhappy. In those scenarios, Spark UI is not necessary, and wasting resource.
> As a result, for local mode, it's desirable that users are able to disable
> the spark UI.
> Couple places I found where the jetty will be started.
> In SparkEnv.scala
> 1) val broadcastManager = new BroadcastManager(isDriver, conf,
> securityManager)
> 2) val httpFileServer = new HttpFileServer(securityManager)
> httpFileServer.initialize()
> I don't know if broadcastManager is needed in local mode tho.
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