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https://issues.apache.org/jira/browse/CASSANDRA-8839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14358862#comment-14358862
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Ariel Weisberg commented on CASSANDRA-8839:
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I added a test and fixed the bug on 2.1. On OS X and my Linux desktop the
interfaces all have ipv4 and ipv6 addresses and the code expects that
interfaces will only have one address. I addressed this by modifying the code
to accept interfaces with multiple addresses.
There are two new config options in cassandra.yaml. rpc_interface_prefer_ipv6
and listen_interface_prefer_ipv6 and both default to false. The code for
selecting an address will now look at prefer_ipv6 and select the first kind of
preferred address listed by the interface. If the preferred kind of address is
not available then the first available address is selected.
Doc for this is going to be necessary, and we need to decide if this behavior
for selecting address is the right way to go.
trunk
https://github.com/apache/cassandra/compare/trunk...aweisberg:C-8839
2.1
https://github.com/apache/cassandra/compare/cassandra-2.1...aweisberg:C-8839-2.1
> DatabaseDescriptor throws NPE when rpc_interface is used
> --------------------------------------------------------
>
> Key: CASSANDRA-8839
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8839
> Project: Cassandra
> Issue Type: Bug
> Components: Config
> Environment: 2.1.3
> Reporter: Jan Kesten
> Assignee: Ariel Weisberg
> Fix For: 2.1.4
>
>
> Copy from mail to dev mailinglist.
> When using
> - listen_interface instead of listen_address
> - rpc_interface instead of rpc_address
> starting 2.1.3 throws an NPE:
> {code}
> ERROR [main] 2015-02-20 07:50:09,661 DatabaseDescriptor.java:144 - Fatal
> error during configuration loading
> java.lang.NullPointerException: null
> at
> org.apache.cassandra.config.DatabaseDescriptor.applyConfig(DatabaseDescriptor.java:411)
> ~[apache-cassandra-2.1.3.jar:2.1.3]
> at
> org.apache.cassandra.config.DatabaseDescriptor.<clinit>(DatabaseDescriptor.java:133)
> ~[apache-cassandra-2.1.3.jar:2.1.3]
> at
> org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:110)
> [apache-cassandra-2.1.3.jar:2.1.3]
> at
> org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:465)
> [apache-cassandra-2.1.3.jar:2.1.3]
> at
> org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:554)
> [apache-cassandra-2.1.3.jar:2.1.3]
> {code}
> Occurs on debian package as well as in tar.gz distribution.
> {code}
> /* Local IP, hostname or interface to bind RPC server to */
> if(conf.rpc_address !=null&& conf.rpc_interface !=null)
> {
> throw newConfigurationException("Set rpc_address OR rpc_interface, not
> both");
> }
> else if(conf.rpc_address !=null)
> {
> try
> {
> rpcAddress = InetAddress.getByName(conf.rpc_address);
> }
> catch(UnknownHostException e)
> {
> throw newConfigurationException("Unknown host in rpc_address "+
> conf.rpc_address);
> }
> }
> else if(conf.rpc_interface !=null)
> {
> listenAddress =
> getNetworkInterfaceAddress(conf.rpc_interface,"rpc_interface");
> }
> else
> {
> rpcAddress = FBUtilities.getLocalAddress();
> }
> {code}
> I think that listenAddress in the second else block is an error. In my case
> rpc_interface is eth0, so listenAddress gets set, and rpcAddress remains
> unset. The result is NPE in line 411:
> {code}
> if(rpcAddress.isAnyLocalAddress())
> {code}
> After changing rpc_interface to rpc_address everything works as expected.
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