On 2010-06-02 3:18, David Boxenhorn wrote:
Is it possible to make a heterogeneous Cassandra cluster, with both
Linux and Windows nodes? I tried doing it and got
Error in ThreadPoolExecutor
java.lang.NullPointerException
Not sure if this is due to the Linux/Windows mix or something else.
Details below:
[...]
INFO 21:42:08,091 Bootstrapping
ERROR 21:49:03,526 Error in ThreadPoolExecutor
java.lang.NullPointerException
at
org.apache.cassandra.streaming.StreamInitiateVerbHandler.getNewNames(StreamInitiateVerbHandler.java:154)
at
org.apache.cassandra.streaming.StreamInitiateVerbHandler.doVerb(StreamInitiateVerbHandler.java:76)
at
org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:40)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
ERROR 21:49:03,527 Fatal exception in thread
Thread[MESSAGE-DESERIALIZER-POOL:1,5,main]
java.lang.NullPointerException
at
org.apache.cassandra.streaming.StreamInitiateVerbHandler.getNewNames(StreamInitiateVerbHandler.java:154)
at
org.apache.cassandra.streaming.StreamInitiateVerbHandler.doVerb(StreamInitiateVerbHandler.java:76)
at
org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:40)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Looks like https://issues.apache.org/jira/browse/CASSANDRA-1136
Make sure you have enough nodes in your cluster to satisfy your
replication factor before you add any data. This is what seems to be
source of the problem in my case.
That said, I was also using an heterogeneous system (Linux + Windows)
but I think I tested it with only Linux nodes too.
