On 5/13/11 10:08 AM, Maki Watanabe wrote:
I wrote a small JMX client to invoke getNaturalEndpoints.
It works fine at my test environment, but throws NPE for keyspace we
will use for our application (both 0.7.5).
Does anyone know quick resolution of that before I setting up
cassandra on eclipse to inspect what happens :)
thanks
Exception in thread "main" javax.management.RuntimeMBeanException:
java.lang.NullPointerException
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.rethrow(DefaultMBeanServerInterceptor.java:877)
[snip]
at
javax.management.remote.rmi.RMIConnector$RemoteMBeanServerConnection.invoke(RMIConnector.java:993)
at my.test.getNaturalEndpoints.main(getNaturalEndpoints.java:32)
Caused by: java.lang.NullPointerException
at
org.apache.cassandra.db.Table.createReplicationStrategy(Table.java:266)
at org.apache.cassandra.db.Table.<init>(Table.java:212)
at org.apache.cassandra.db.Table.open(Table.java:106)
at
org.apache.cassandra.service.StorageService.getNaturalEndpoints(StorageService.java:1497)
[snip]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)
Did you by chance see this after dropping the keyspace? I believe I've
seen this as well. If so (and if I'm interpreting the stack trace and
code correctly) it might be related to queuing an op for a keyspace
that's been dropped without checking if its metadata is null rather than
your code.
