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Kevin Risden commented on KNOX-1851: ------------------------------------ issue might be that we never init the ZooKeeperClientServiceProvider... https://github.com/apache/knox/blob/master/gateway-server/src/main/java/org/apache/knox/gateway/services/security/impl/ZookeeperRemoteAliasServiceProvider.java#L34 We don't catch this in the tests due to https://github.com/apache/knox/blob/master/gateway-server/src/test/java/org/apache/knox/gateway/services/security/impl/ZookeeperRemoteAliasServiceTest.java#L144 > NPE on startup when Zookeeper Remote Alias Service is configured > ---------------------------------------------------------------- > > Key: KNOX-1851 > URL: https://issues.apache.org/jira/browse/KNOX-1851 > Project: Apache Knox > Issue Type: Bug > Components: Server > Affects Versions: 1.3.0 > Reporter: Sandeep More > Priority: Major > Fix For: 1.3.0 > > > When ZK remote alias service is configured Knox fails to start with the > following NPE > {code:java} > 2019-04-09 16:34:47,894 FATAL knox.gateway (GatewayServer.java:main(177)) - > Failed to start gateway: java.lang.NullPointerException > java.lang.NullPointerException > at > org.apache.knox.gateway.services.security.impl.ZookeeperRemoteAliasService.ensureEntry(ZookeeperRemoteAliasService.java:120) > at > org.apache.knox.gateway.services.security.impl.ZookeeperRemoteAliasService.ensureEntries(ZookeeperRemoteAliasService.java:408) > at > org.apache.knox.gateway.services.security.impl.ZookeeperRemoteAliasService.init(ZookeeperRemoteAliasService.java:326) > at > org.apache.knox.gateway.services.security.impl.RemoteAliasService.init(RemoteAliasService.java:260) > at > org.apache.knox.gateway.services.DefaultGatewayServices.init(DefaultGatewayServices.java:91) > at org.apache.knox.gateway.GatewayServer.main(GatewayServer.java:168) > 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.apache.knox.gateway.launcher.Invoker.invokeMainMethod(Invoker.java:68) > at org.apache.knox.gateway.launcher.Invoker.invoke(Invoker.java:39) > at org.apache.knox.gateway.launcher.Command.run(Command.java:99) > at org.apache.knox.gateway.launcher.Launcher.run(Launcher.java:75) > at org.apache.knox.gateway.launcher.Launcher.main(Launcher.java:52) > {code} -- This message was sent by Atlassian JIRA (v7.6.3#76005)