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https://issues.apache.org/jira/browse/KNOX-1851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16814841#comment-16814841
]
Kevin Risden commented on KNOX-1851:
------------------------------------
I don't think we should have the fall back to if not able to pull from
services. It will never work. Would be better to fail with some sort of error
message or at least log that case.
> 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
> Assignee: Sandeep More
> Priority: Major
> Fix For: 1.3.0
>
> Attachments: KNOX-1851.001.patch
>
>
> 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}
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