[jboss-jira] [JBoss JIRA] (JGRP-1341) BARRIER: block only multicast, not unicast messages

[Bela Ban (JIRA)]

    [ https://issues.jboss.org/browse/JGRP-1341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12923133#comment-12923133 ] 

Bela Ban commented on JGRP-1341:
--------------------------------

The problem though is the multicast messages retransmitted via a *unicast* would not get blocked !
                
> BARRIER: block only multicast, not unicast messages
> ---------------------------------------------------
>
>                 Key: JGRP-1341
>                 URL: https://issues.jboss.org/browse/JGRP-1341
>             Project: JGroups
>          Issue Type: Task
>            Reporter: Bela Ban
>            Assignee: Bela Ban
>             Fix For: 2.12.2, 3.0
>
>
> BARRIER is used by the state transfer protocols, to get the digest and the state atomically. However, the digest only keeps track of multicast (=group) messages, so we don't need to block unicast messages !
> This would help us in STREAMING_STATE_TRANSFER: even though we block the BARRIER, the state chunks sent from the state provider to the state requester (when use_default_transport=true) will *not* get blocked with this change !

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