About queue yes and no ;)
For instance, a cluster:feature-install will do:
- update of the distributed map (containing the list of features per
cluster group with the current status)
- broadcast the cluster event (using a Hazelcast topic)
However, in Cellar core, we provide a "wrapper" around queue that you
can use. So we can leverage it (with some handler) for some action (we
already use it for some administration commands).
Regards
JB
On 11/21/2012 05:59 PM, Chris Geer wrote:
Thanks JB. I'll just have to take a look at the code at some point to
fully understand it. I'll check it out after you do the release for 2.2.5.
Is there any way to "queue" multiple changes so they all take place at
once? That is probably closer to the Fuse Fabric profile concept though.
Thanks,
Chris
On Wed, Nov 21, 2012 at 9:50 AM, Jean-Baptiste Onofré <[email protected]
<mailto:[email protected]>> wrote:
Hi Chris,
In Cellar, you have the Synchronizers that pull/push the
configuration (and the others resources).
You have two cases:
1/ when a new node join a cluster group, the synchronizer is called
2/ if a node leaves Cellar (for instance, network issue) and get
"outdated" regarding the distributed configuration and resources
states, you have to refresh cellar to call the synchronizer again
For 2/, I plan to add a cluster:sync command (and the corresponding
MBean) to "force" the call to the synchronizer.
It will be included in Cellar 2.2.5 (that I plan to release tonight ;)).
Regards
JB
On 11/21/2012 05:41 PM, Chris Geer wrote:
I've been looking at Karaf Cellar and have a question regarding
configuration changes and offline containers. My understanding
is that
configuration changes are propagated amongst the containers
through the
Hazelcast topics/queue. Is there anything in place to handle the
case
where one container was offline/disconnected from the Hazelcast
cluster
during a config change to re-sync once it connects again?
Thanks,
Chris
--
Jean-Baptiste Onofré
[email protected] <mailto:[email protected]>
http://blog.nanthrax.net
Talend - http://www.talend.com
--
Jean-Baptiste Onofré
[email protected]
http://blog.nanthrax.net
Talend - http://www.talend.com
