[jboss-jira] [JBoss JIRA] (JGRP-1514) RELAY2: store-and-forward inter-site messages to prevent message loss when site master crashes

[Bela Ban (JIRA)]

    [ https://issues.jboss.org/browse/JGRP-1514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12719044#comment-12719044 ] 

Bela Ban edited comment on JGRP-1514 at 9/17/12 7:47 AM:
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I added a simple retry mechanism to forward messages to remote sites. 

A more refined store-and-forward mechanism will be investigated in 3.3 (if still needed). Let's see how usage of RELAY2 by Infinispan pans out first.
                
      was (Author: belaban):
    I added a simple retry mechanism to forward messages to remote sites. 

A more refined store-and-forward mechanism will be investigated in 3.2 (if still needed). Let's see how usage of RELAY2 by Infinispan pans out first.
                  
> RELAY2: store-and-forward inter-site messages to prevent message loss when site master crashes
> ----------------------------------------------------------------------------------------------
>
>                 Key: JGRP-1514
>                 URL: https://issues.jboss.org/browse/JGRP-1514
>             Project: JGroups
>          Issue Type: Feature Request
>            Reporter: Bela Ban
>            Assignee: Bela Ban
>             Fix For: 3.3
>
>
> JGRP-1401 deals with crashes of the site master *within* the current site, and developed FORWARD_TO_COORD to deal with those temporary losses (a new coord will take over), to prevent message loss.
> *This* JIRA is about preventing message loss caused by the site master of a *remote site* crashing. The general idea is to store-and-forward a message for a certain time and/or a certain number of attempts to forward.
> The most frequent use case is probably that the site master of a remote site left (or crashed) and the new site master hasn't yet opened the bridge, so the message would be lost. Store-and-forward should help here.
> If we still cannot forward the message for a (configurable) time and/or number of tries, we'll send a SITE_UNREACHABLE message back to the original sender of the message, which will then have to deal with it.

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