[YARN-10510] TestAppPage.testAppBlockRenderWithNullCurrentAppAttempt will cause NullPointerException

• Type: Test
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Component/s: test
• Labels: test
• Target Version/s: 3.3.9
• Hadoop Flags: Reviewed
• Flags: Patch
• Assignee: Unassigned
• Reporter: tuyu
• Created: 01/Dec/20 12:35
• Updated: 29/Nov/22 15:58

Description

run TestAppPage.testAppBlockRenderWithNullCurrentAppAttempt will cause blow exception

2020-12-01 20:16:41,412 ERROR [main] webapp.AppBlock (AppBlock.java:render(124)) - Failed to read the application application_1234_0000.
java.lang.NullPointerException
	at org.apache.hadoop.yarn.server.resourcemanager.webapp.RMAppBlock.getApplicationReport(RMAppBlock.java:218)
	at org.apache.hadoop.yarn.server.webapp.AppBlock.render(AppBlock.java:112)
	at org.apache.hadoop.yarn.server.resourcemanager.webapp.RMAppBlock.render(RMAppBlock.java:71)
	at org.apache.hadoop.yarn.webapp.view.HtmlBlock.render(HtmlBlock.java:69)
	at org.apache.hadoop.yarn.server.resourcemanager.webapp.TestAppPage.testAppBlockRenderWithNullCurrentAppAttempt(TestAppPage.java:92)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220)
	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53)
Disconnected from the target VM, address: '127.0.0.1:60623', transport: 'socket'

because of mockClientRMService not mock getApplicationReport and getApplicationAttempts interface