"danhanley" wrote : "danhanley" wrote : Hi
  |   | We're testing a cluster of 3 intel boxes running jBoss 3.2.3 on RedHat 9. 
  |   | One box in particular is very heavily loaded by our application. Occasionaly 
(perhaps once a day) the box stops communicating with the rest of the cluster and 
fills its logs with the following message:
  |   | 
  |   | 2004-01-22 09:29:36,458 DEBUG [org.javagroups.MDC3TestPartition] [Thu Jan 22 
09:29:36 GMT 2004] [ERROR] UDP.sendUdpMessage()
  |   | : (unicast) send_sock is null. Message is [dst: 213.86.178.88:44305, src: 
dev4:32947 (3 headers), size = 1723 bytes], headers are {UNICAST=[UNICAST: DATA, 
seqno=47],UDP=UDP:group_addr=MDC3TestPartition], MessageDispatcher=[Header: 
name=MessageDispatcher, type=RSP, id=1074701665445, rsp_expected=false]}
  |   | 
  |   | Stopping and restarting jboss clears the problem, but obviously is not 
something we want to be doing when we go to production.
  |   | 
  |   |  

Do you have the logs for this ? Also, can you post your cluster-service.xml ? You may 
have to increase the values for FD, or use FD_SOCK instead.

Bela

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