[jboss-jira] [JBoss JIRA] Resolved: (JGRP-532) TCP: hangs without FC

[Bela Ban (JIRA)]

     [ http://jira.jboss.com/jira/browse/JGRP-532?page=all ]

Bela Ban resolved JGRP-532.
---------------------------

    Resolution: Done

The deadlock only happens when down() can block (e.g. in the transport). We cannot avoid a block on TCP write(), so we have to avoid blocking the receiver, and therefore run the sending of stable messages in a separate thread.
Of course, we can always avoid the receiver from ever hanging by simply defining a rejection policy of "discard" rather than "run"

> TCP: hangs without FC
> ---------------------
>
>                 Key: JGRP-532
>                 URL: http://jira.jboss.com/jira/browse/JGRP-532
>             Project: JGroups
>          Issue Type: Bug
>            Reporter: Bela Ban
>         Assigned To: Bela Ban
>             Fix For: 2.5
>
>         Attachments: config.txt, tcp.xml, tmp.txt
>
>
> Usually, FC is enabled, but when FC is not present, perf.Test with 2 senders and the attached tcp.xml/config.txt hangs. Stack trace attached too.

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