[YARN-10016] NPE is thrown when accessing SLS web portal

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.3.0
• Assignee: Aihua Xu
• Reporter: Aihua Xu
• Created: 06/Dec/19 17:37
• Updated: 06/Dec/19 19:33

Description

The following NPE is thrown when running SLS and accessing http://$HOST:10001/simulate

java.lang.NullPointerException
	at org.eclipse.jetty.server.ResourceService.doGet(ResourceService.java:235)
	at org.eclipse.jetty.server.handler.ResourceHandler.handle(ResourceHandler.java:256)
	at org.apache.hadoop.yarn.sls.web.SLSWebApp$1.handle(SLSWebApp.java:159)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at org.eclipse.jetty.server.Server.handle(Server.java:494)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:374)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:268)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
	at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:135)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:782)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:918)
	at java.lang.Thread.run(Thread.java:748)

Issue Links

• is related to: YARN-1021 Yarn Scheduler Load Simulator