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https://issues.apache.org/jira/browse/YARN-7614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17602878#comment-17602878
]
ASF GitHub Bot commented on YARN-7614:
--------------------------------------
slfan1989 commented on code in PR #4843:
URL: https://github.com/apache/hadoop/pull/4843#discussion_r967555986
##########
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/test/java/org/apache/hadoop/yarn/server/router/webapp/TestRouterWebServicesREST.java:
##########
@@ -198,6 +202,7 @@ public Boolean get() {
}
}, 1000, 10 * 1000);
} catch (Exception e) {
+ LOG.error("Web app not running", e);
Review Comment:
We should add some more information, because the current log is not enough
for analysis after an error is reported.
The error stack is as follows:
```
Error Message
Web app not running
Stacktrace
java.lang.AssertionError: Web app not running
at org.junit.Assert.fail(Assert.java:89)
at
org.apache.hadoop.yarn.server.router.webapp.TestRouterWebServicesREST.waitWebAppRunning(TestRouterWebServicesREST.java:201)
at
org.apache.hadoop.yarn.server.router.webapp.TestRouterWebServicesREST.setUp(TestRouterWebServicesREST.java:225)
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:59)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at
org.junit.internal.runners.statements.RunBefores.invokeMethod(RunBefores.java:33)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
....
```
We can also view the following test report
[Test-Report](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4843/12/testReport/org.apache.hadoop.yarn.server.router.webapp/TestRouterWebServicesREST/org_apache_hadoop_yarn_server_router_webapp_TestRouterWebServicesREST/)
Just looking at the error message of the stack, it seems impossible to
analyze why the `Web app is not running`.
> [RESERVATION] Support ListReservation APIs in Federation Router
> ---------------------------------------------------------------
>
> Key: YARN-7614
> URL: https://issues.apache.org/jira/browse/YARN-7614
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: federation, reservation system
> Reporter: Carlo Curino
> Assignee: fanshilun
> Priority: Major
> Labels: pull-request-available
>
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