java.util.NoSuchElementException: None.get

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In Scala, don’t use the get method with Option to access a result. Use getOrElse, a match expression, or foreach instead.

java.util.NoSuchElementException: None.get
at scala.None$.get(Option.scala:313)
at scala.None$.get(Option.scala:311)
at org.apache.spark.ui.jobs.StagePage.taskRow(StagePage.scala:331)
at org.apache.spark.ui.jobs.StagePage$$anonfun$8.apply(StagePage.scala:173)
at org.apache.spark.ui.jobs.StagePage$$anonfun$8.apply(StagePage.scala:173)
at org.apache.spark.ui.UIUtils$$anonfun$listingTable$2.apply(UIUtils.scala:282)
at org.apache.spark.ui.UIUtils$.listingTable(UIUtils.scala:282)
at org.apache.spark.ui.jobs.StagePage.render(StagePage.scala:171)
at org.apache.spark.ui.WebUI$$anonfun$attachPage$1.apply(WebUI.scala:68)
at org.apache.spark.ui.WebUI$$anonfun$attachPage$1.apply(WebUI.scala:68)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:735)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:370)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494)
at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:971)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1033)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:667)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at java.lang.Thread.run(Thread.java:722)

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