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From nlif <>
Subject Re: Transfer all HttpSessions from one cluster node to another
Date Wed, 28 Jan 2009 08:40:54 GMT


Thanks. If you could elaborate some more, then maybe I can go ahead and
implement this, and I'd be happy to send you the result, so you can use it
and save yourself some of the work.


Filip Hanik - Dev Lists wrote:
> nlif wrote:
>> Hi all,
>> We intend to run in a cluster, with stickiness enabled, and without
>> replication. This of course does not give us failover capabilities, in
>> case
>> of a server crash, but it is sufficient for our needs. 
>> However, we would like to be able to transfer all sessions currently on
>> one
>> node, to another node, when we are about to shutdown a server for
>> maintenance. This is different from the default behavior of
>> session-replication, in that it only happens when we trigger it (e.g. via
>> JMX), and with us specifying the source node and destination node.
>> Is this supported?
>> Has anyone done such a thing?
> hi Naaman, while this feature is not currently in place, it's something 
> that has been brewing in the back of my head for a long time.
> It is an extremely useful feature, and its just a matter of time for me 
> to get it implemented.
> The simplest way would be to start with the BackupManager, but simple 
> remove the "nr of backup nodes" and therefore not replicate.
> And then simply implement a "move sessions" during a graceful shutdown.
> Filip
>> I would appreciate any tips.
>> Thanks,
>> Naaman
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