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https://issues.apache.org/jira/browse/CASSANDRA-11381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15259507#comment-15259507
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Joel Knighton commented on CASSANDRA-11381:
-------------------------------------------

I've tested some scenarios and can confirm that the scenario Sam described 
above is problematic.

Another concern I have is potentially performing auth setup before a node is 
added to its own TokenMetadata in the join_ring false case. It seems to me that 
this might cause problems with our own implementations and could feasibly cause 
problems for 3rd party implementations, so I think the original approach of 
handling auth setup down both branches may be worth pursuing here in the 
interest of safety.

On trunk, we have another property "start_gossip" that stops 
{{StorageService.initServer}} even earlier - I don't think we can support auth 
at this point, so I don't care about supporting it in this ticket (my earlier 
comment hinted at the fact that I was considering whether it was in scope).

> Node running with join_ring=false and authentication can not serve requests
> ---------------------------------------------------------------------------
>
>                 Key: CASSANDRA-11381
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11381
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: mck
>            Assignee: mck
>             Fix For: 2.1.x, 2.2.x, 3.0.x, 3.x
>
>         Attachments: 11381-2.0.txt, 11381-2.1.txt, 11381-2.2.txt, 
> 11381-3.0.txt, 11381-trunk.txt, dtest-11381-trunk.txt
>
>
> Starting up a node with {{-Dcassandra.join_ring=false}} in a cluster that has 
> authentication configured, eg PasswordAuthenticator, won't be able to serve 
> requests. This is because {{Auth.setup()}} never gets called during the 
> startup.
> Without {{Auth.setup()}} having been called in {{StorageService}} clients 
> connecting to the node fail with the node throwing
> {noformat}
> java.lang.NullPointerException
>         at 
> org.apache.cassandra.auth.PasswordAuthenticator.authenticate(PasswordAuthenticator.java:119)
>         at 
> org.apache.cassandra.thrift.CassandraServer.login(CassandraServer.java:1471)
>         at 
> org.apache.cassandra.thrift.Cassandra$Processor$login.getResult(Cassandra.java:3505)
>         at 
> org.apache.cassandra.thrift.Cassandra$Processor$login.getResult(Cassandra.java:3489)
>         at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
>         at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)
>         at com.thinkaurelius.thrift.Message.invoke(Message.java:314)
>         at 
> com.thinkaurelius.thrift.Message$Invocation.execute(Message.java:90)
>         at 
> com.thinkaurelius.thrift.TDisruptorServer$InvocationHandler.onEvent(TDisruptorServer.java:695)
>         at 
> com.thinkaurelius.thrift.TDisruptorServer$InvocationHandler.onEvent(TDisruptorServer.java:689)
>         at com.lmax.disruptor.WorkProcessor.run(WorkProcessor.java:112)
>         at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:745)
> {noformat}
> The exception thrown from the 
> [code|https://github.com/apache/cassandra/blob/cassandra-2.0.16/src/java/org/apache/cassandra/auth/PasswordAuthenticator.java#L119]
> {code}
> ResultMessage.Rows rows = 
> authenticateStatement.execute(QueryState.forInternalCalls(), new 
> QueryOptions(consistencyForUser(username),
>                                                                               
>        Lists.newArrayList(ByteBufferUtil.bytes(username))));
> {code}



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