[infinispan-dev] Setting JGroups channel name

[Mircea Markus]

On Sep 16, 2009, at 10:29 PM, Vladimir Blagojevic wrote:

> On 09-09-10 1:41 PM, Mircea Markus wrote:
>> Good point. What we can do is use a placeholder ${nodeName:default}
>> and if one specifies it through -DnodeName will be taken into  
>> account.
>> It's much easier going through logs and looking for nodes named:
>> "aaaa", "bbb" and "ccc" rather than host:port1, host2:port2 etc.
>> Actually we even have a script that does that, so that we can debug
>> logs more easily :)
>>
>>
> Yes, but as soon as you have two cache managers in the same VM you are
> screwed, right?
Two cache managers means two different global configs, i.e. the  
possibility to give different names.
If for whatever reasons, the user needs to use exactly the same config  
file for two CacheManagers within the same JVM than he won't be able  
to use this feature, and and channel instance will default to  
host:port, as per jgroup's default. It's up to the user to make sure  
the node names are unique. Even more, if he doesn't want to use this  
feature he doesn't need to, as the nodeName (I think is rather about  
the name of the node rather than name of the channel) attribute (or  
however will it be named) would be optional.
> We would end up with two channels with the same name.
> Everything would work as far as JGroups is concerned but logs would be
> useless.
>
> Don't forget that channel names need to be unique per JVM and across  
> JVMs!
>
> The only solution I can think of is to add API that allows naming of
> CacheManagers. That name could be reused to name channel as well.
>
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