[jboss-jira] [JBoss JIRA] Commented: (JGRP-338) Anycast

[Bela Ban (JIRA)]

    [ http://jira.jboss.com/jira/browse/JGRP-338?page=comments#action_12347727 ] 
            
Bela Ban commented on JGRP-338:
-------------------------------

To do this, we need an additional target in a Message: a List or array of Addresses. The transports then use whatever is more appropriate to send the message. Let N be the cluster size and K be the subset to send the message to.:
UDP: 
- if K < N/2: send K unicasts, else send a multicast and have all members not in K discard the message

TCP:
- always send K unicasts

> Anycast
> -------
>
>                 Key: JGRP-338
>                 URL: http://jira.jboss.com/jira/browse/JGRP-338
>             Project: JGroups
>          Issue Type: Feature Request
>    Affects Versions: 2.4
>            Reporter: Bela Ban
>         Assigned To: Bela Ban
>             Fix For: 2.5
>
>
> Send a message to N target members, where N is less than the group size (multicast) and more than 1 (unicast). This will allow for RpcDispatcher.callRemoteMethods() to provide a list of target members, and each transport decides individually whether to use multicast of multiple unicasts.
> Used for Buddy Replication in JBossCache

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