[
https://issues.apache.org/jira/browse/ZOOKEEPER-1961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14055077#comment-14055077
]
Steve Loughran commented on ZOOKEEPER-1961:
-------------------------------------------
stack
{code}
at
org.apache.hadoop.yarn.registry.server.services.RegistryZKService.newCurator(RegistryZKService.java:148)
at
org.apache.hadoop.yarn.registry.server.services.RegistryZKService.serviceStart(RegistryZKService.java:83)
at
org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
at
org.apache.hadoop.yarn.registry.server.services.TestRegistryZKService.testRegistryStart(TestRegistryZKService.java:32)
org.apache.hadoop.yarn.registry.server.services.TestRegistryZKService Time
elapsed: 1.021 sec <<< ERROR!
java.lang.NullPointerException: null
at
org.apache.zookeeper.server.ZooKeeperServerMain.shutdown(ZooKeeperServerMain.java:132)
at
org.apache.curator.test.TestingZooKeeperMain.close(TestingZooKeeperMain.java:103)
at
org.apache.curator.test.TestingZooKeeperServer.stop(TestingZooKeeperServer.java:94)
at
org.apache.curator.test.TestingZooKeeperServer.close(TestingZooKeeperServer.java:106)
at org.apache.curator.test.TestingServer.close(TestingServer.java:112)
at
org.apache.hadoop.yarn.registry.AbstractZKRegistryTest.destroyZKServer(AbstractZKRegistryTest.java:56)
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:606)
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.RunAfters.evaluate(RunAfters.java:33)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at
org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:264)
at
org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:153)
at
org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:124)
at
org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:200)
at
org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:153)
at org.apache.maven.surefire.
{code}
> NPE in ZooKeeperServerMain.shutdown()
> -------------------------------------
>
> Key: ZOOKEEPER-1961
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1961
> Project: ZooKeeper
> Issue Type: Improvement
> Components: server
> Affects Versions: 3.4.6
> Reporter: Steve Loughran
>
> while trying to stop a server that appears not to have started properly, the
> {{stop()}} method triggered an NPE
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