I ran nodetool decommission on a node from a 4 nodes cluster as follows: nodetool -h 192.168.26.130 decommission
But it never completes & doesn't show any messages, on seeing the logs I noticed: java.util.concurrent.RejectedExecutionException: ThreadPoolExecutor has shut down at org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor$1.rejectedExecution(DebuggableThreadPoolExecutor.java:60) at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecuto r.java:767) at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecuto r.java:658) on viewing netstats on this node I can see the node in LEAVING mode mode: LEAVING Nothing streaming to /192.168.26.131 Nothing streaming to /192.168.26.129 Not receiving any streams.