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https://issues.apache.org/jira/browse/CASSANDRA-6618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13881517#comment-13881517
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Ravi Prasad edited comment on CASSANDRA-6618 at 1/24/14 11:04 PM:
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if the authenticator is not Saslaware, the run() returns without starting the 
nativeServer and we still set isRunning to true, in that case:
https://github.com/apache/cassandra/blob/cassandra-2.0/src/java/org/apache/cassandra/transport/Server.java#L133


was (Author: ravilr):
if the authenticator is not Saslaware, the run() returns and we stills set 
isRunning to true.
https://github.com/apache/cassandra/blob/cassandra-2.0/src/java/org/apache/cassandra/transport/Server.java#L133

> NullPointerException while stopping/draining if native transport wasn't 
> started
> -------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-6618
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6618
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: RHEL6, cassandra-2.0.4
>            Reporter: Ravi Prasad
>            Priority: Minor
>         Attachments: 6618-2.0.txt
>
>
> if using a custom Authenticator, native transport server wouldn't be started.
> ERROR [main] 2014-01-24 03:04:40,876 Server.java (line 131) Not starting 
> native transport as the configured IAuthenticator is not capable of SASL 
> authentication
> But, while stopping cassandra/'nodetool drain', this results in 
> NullpointerException being thrown currently:
> Exception in thread "main" java.lang.NullPointerException
>       at org.apache.cassandra.transport.Server.close(Server.java:177)
>       at org.apache.cassandra.transport.Server.stop(Server.java:116)
>       at 
> org.apache.cassandra.service.StorageService.stopNativeTransport(StorageService.java:349)
>       at 
> org.apache.cassandra.service.StorageService.shutdownClientServers(StorageService.java:364)
>       at 
> org.apache.cassandra.service.StorageService.drain(StorageService.java:3288)
>       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:601)
>       at 
> com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:111)
>       at 
> com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:45)
>       at 
> com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:235)
>       at com.sun.jmx.mbeanserver.PerInterface.invoke(PerInterface.java:138)
>       at com.sun.jmx.mbeanserver.MBeanSupport.invoke(MBeanSupport.java:252)
>       at 
> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
>       at 
> com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:792)
>       at 
> javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1486)
>       at 
> javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:96)
>       at 
> javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1327)
>       at 
> javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1419)
>       at 
> javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:847)
>       at sun.reflect.GeneratedMethodAccessor18.invoke(Unknown Source)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:601)
>       at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:322)
>       at sun.rmi.transport.Transport$1.run(Transport.java:177)
>       at sun.rmi.transport.Transport$1.run(Transport.java:174)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
>       at 
> sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:553)
>       at 
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:808)
>       at 
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:667)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>       at java.lang.Thread.run(Thread.java:722)



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