Our replication factor was 1, so that wasn't the problem. (We tried other replication factors too, just in case, but it didn't help.)
On Wed, Jun 2, 2010 at 7:51 PM, Nahor <nahor.j+gm...@gmail.com<nahor.j%2bgm...@gmail.com> > wrote: > 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. > > >
