[jboss-jira] [JBoss JIRA] (JGRP-1931) Don't drop UNICAST3 message when the window is not created

[Bela Ban (JIRA)]

    [ https://issues.jboss.org/browse/JGRP-1931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13079676#comment-13079676 ] 

Bela Ban commented on JGRP-1931:
--------------------------------

What's the use case here ? The {{DONT_BUNDLE}} flag should be used sparingly and is actually ignored unless coupled with {{OOB}}. Note that only a few internal JGroups messages use {{DONT_BUNDLE, OOB}}.

> Don't drop UNICAST3 message when the window is not created 
> -----------------------------------------------------------
>
>                 Key: JGRP-1931
>                 URL: https://issues.jboss.org/browse/JGRP-1931
>             Project: JGroups
>          Issue Type: Bug
>    Affects Versions: 3.6.3
>            Reporter: Radim Vansa
>            Assignee: Bela Ban
>             Fix For: 3.6.4
>
>
> When an application sends first two (or more) messages in parallel and the the second one is marked as DONT_BUNDLE, usually this one arrives as the first one and is dropped (see https://github.com/belaban/JGroups/blob/master/src/org/jgroups/protocols/UNICAST3.java#L943). After first message arrives, the connection is properly set up, but we need to wait until retransmission for the message (and other non-OOB) messages to be delivered.
> In practice this behaviour should be acceptable, but it causes failures in some time-sensitive tests (particularly in Hibernate ORM 2nd level cache).



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