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https://issues.apache.org/jira/browse/SPARK-5547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14302739#comment-14302739
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Sean Owen commented on SPARK-5547:
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What are you running, and how? how was it built?
This usually means you brought in a different version of Jetty, or at least,
servlet APIs.
> With assembly jar to run example throws an exception
> ----------------------------------------------------
>
> Key: SPARK-5547
> URL: https://issues.apache.org/jira/browse/SPARK-5547
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Reporter: meiyoula
> Priority: Critical
>
> Exception in thread "main" java.lang.NoClassDefFoundError:
> javax/servlet/DispatcherType
> at org.apache.spark.ui.JettyUtils$.addFilters(JettyUtils.scala:141)
> at
> org.apache.spark.ui.JettyUtils$.startJettyServer(JettyUtils.scala:184)
> at org.apache.spark.ui.WebUI.bind(WebUI.scala:102)
> at
> org.apache.spark.SparkContext$$anonfun$11.apply(SparkContext.scala:280)
> at
> org.apache.spark.SparkContext$$anonfun$11.apply(SparkContext.scala:280)
> at scala.Option.foreach(Option.scala:236)
> at org.apache.spark.SparkContext.<init>(SparkContext.scala:280)
> at org.apache.spark.examples.SparkPi$.main(SparkPi.scala:28)
> at org.apache.spark.examples.SparkPi.main(SparkPi.scala)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:601)
> at org.apache.spark.deploy.SparkSubmit$.launch(SparkSubmit.scala:403)
> at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:77)
> at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
> Caused by: java.lang.ClassNotFoundException: javax.servlet.DispatcherType
> at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
> ... 16 more
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