users@glassfish.java.net

Re: In-memory replication not working in multi-node configuration

From: Shreedhar Ganapathy <Shreedhar.Ganapathy_at_Sun.COM>
Date: Wed, 03 Jun 2009 08:44:39 -0700

Hi Mobi
I went back through the forum entry and realize the full server logs of
the instances involved and DAS server logs are not attached. That would
be helpful for any analysis.

Also, I would recommend you try out the suggested route of Apache and
mod_jk (I have not seen any material from our documentation saying we
support mod_proxy).
It would rule out any missing session cookie or jvmRoute issue, if any.

Based on previous postings, it is quite hard to determine what the
source of the problem is, so the above should enable folks here to help
you.

hth
Shreedhar


glassfish_at_javadesktop.org wrote:
>> If I had the problem you describe, shouldn't the
>> cluster work at first and then collapse after a
>> couple of minutes? If so, this is not the case here.
>> In my case it seems more as if the nodes don't join
>> the same party for some reason.
>>
>
> That is exactly what happened. Data session replication would initially
> work for about 15 minutes.
>
> However, as you can make replication work with multiple nodes on a single box,
> nodes not being able to join the same party must be a multicasting/networking problem.
>
>
>> WRT low level problems, I have tried a pair of small
>> C-programs (I can post here if required) that create
>> a multicast group and print messages (server side)
>> that clients posted after joining the mcast group.
>> That seems to work so far.
>>
>> Cheers
>> Mobi.
>>
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