[cas-dev] JBoss Distributed Cache 'failed unmarshalling message', 'packet from ... has different version'

[Lee Braddock]

Scott,

 

In our two host clustered environment using the jboss distributed cache,
we are encountering a failed unmarshalling exception just following the
error: packet from 172.16.103.17:45566 has different version (12338)
from ours (241). This may cause problems. (see below for details).

 

Three questions:

 

1)      What might be causing the "packet from .... has different
version" error? And is this error definitely adversely affecting
distributed jboss cache management of tickets or can it possibly be
ignored? 

2)      The 'packet from' ip address given is actually the ip address of
the local host, NOT the other host in the cluster.  This is a bit
confusing as I would expect it to be coming from some other host.  Can
you clarify?

3)      What does 'own_addr' (see debug statement below) refer to?
Owner?  It happens to be the other host in the cluster (i.e. not the
local host).

 

Thanks very much for your help.

 

Lee

 

2007-10-10 11:00:11,956 INFO [org.jgroups.protocols.UDP] - socket
information:

local_addr=172.16.103.17:43127, mcast_addr=228.0.0.1:45566,
bind_addr=/172.16.103.17, ttl=64

sock: bound to 172.16.103.17:43127, receive buffer size=80000, send
buffer size=131071

mcast_recv_sock: bound to 172.16.103.17:45566, send buffer size=131071,
receive buffer size=80000

mcast_send_sock: bound to 172.16.103.17:43128, send buffer size=131071,
receive buffer size=80000

2007-10-10 11:00:11,990 DEBUG [org.jgroups.protocols.UDP] - created
unicast receiver thread

2007-10-10 11:00:13,224 WARN [org.jgroups.protocols.UDP] - packet from
172.16.103.17:45566 has different version (12338) from ours (241). This
may cause problems

2007-10-10 11:00:13,226 ERROR [org.jgroups.protocols.UDP] - failed
unmarshalling message

java.net.UnknownHostException: addr is of illegal length

        at java.net.InetAddress.getByAddress(InetAddress.java:924)

        at java.net.InetAddress.getByAddress(InetAddress.java:1271)

        at org.jgroups.stack.IpAddress.readFrom(IpAddress.java:261)

        at org.jgroups.util.Util.readAddress(Util.java:476)

        at org.jgroups.protocols.TP.bufferToList(TP.java:1021)

        at org.jgroups.protocols.TP.handleIncomingPacket(TP.java:827)

        at org.jgroups.protocols.TP.access$400(TP.java:45)

        at
org.jgroups.protocols.TP$IncomingPacketHandler.run(TP.java:1296)

        at java.lang.Thread.run(Thread.java:595)

2007-10-10 11:00:13,992 DEBUG [org.jgroups.protocols.pbcast.GMS] -
initial_mbrs are [[own_addr=172.16.103.18:29361,
coord_addr=172.16.103.18:29361, is_server=true]]

2007-10-10 11:00:13,992 DEBUG [org.jgroups.protocols.pbcast.GMS] -
election results: {172.16.103.18:29361=1}

2007-10-10 11:00:13,992 DEBUG [org.jgroups.protocols.pbcast.GMS] -
sending handleJoin(172.16.103.17:43127) to 172.16.103.18:29361

 

Lee Braddock

Sr. Applications Developer

Enterprise Framework

ITG Applications 

Campus Crusade for Christ

407-826-2166 office

http://itg.ccci.org <http://itg.ccci.org/> 

 

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