I have ring of three nodes. When i try to decommission one of the machine then i got the following exception:


java.util.concurrent.RejectedExecutionException: ThreadPoolExecutor has shut down
at org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor$1.rejectedExecution(DebuggableThreadPoolExecutor.java:61)
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:816)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1337)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:106)
at org.apache.cassandra.net.IncomingTcpConnection.run(IncomingTcpConnection.java:73)
ERROR [Thread-11] 2010-08-04 23:38:56,140 CassandraDaemon.java (line 83) Uncaught exception in thread Thread[Thread-11,5,main]
java.util.concurrent.RejectedExecutionException: ThreadPoolExecutor has shut down
at org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor$1.rejectedExecution(DebuggableThreadPoolExecutor.java:61)
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:816)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1337)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:106)
at org.apache.cassandra.net.IncomingTcpConnection.run(IncomingTcpConnection.java:73)


My Cassandra version is 0.6.3 and Operating system is Ubuntu 8.04 Server.