[jboss-jira] [JBoss JIRA] (JGRP-2486) FD Monitor get stuck on TrasferQueueBundler

[lukas brandl (Jira)]

    [ https://issues.redhat.com/browse/JGRP-2486?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14184477#comment-14184477 ] 

lukas brandl commented on JGRP-2486:
------------------------------------

I've created a pull request (here: [https://github.com/belaban/JGroups/pull/500]) to split the FD Monitor task into a timeout checker and a heartbeat sender, in the same way as the FD_ALL and FD_ALL2 protocol. This way the timeout check can't be blocket by the TCP transport and the dead nodes is suspected. 

> FD Monitor get stuck on TrasferQueueBundler
> -------------------------------------------
>
>                 Key: JGRP-2486
>                 URL: https://issues.redhat.com/browse/JGRP-2486
>             Project: JGroups
>          Issue Type: Bug
>    Affects Versions: 4.0.22
>            Reporter: lukas brandl
>            Assignee: Bela Ban
>            Priority: Major
>         Attachments: Main.java, stack-trace.txt
>
>
> Apparently there is an issue in the FD protocol. When a cluster nodes is disconnected and the disconnect isn't handled by FD_SOCK, FD stops sending heartbeats after a while. This only happens when the queue of the TrasferQueueBundler fills up before the node is suspected.
> The stack trace shows that the FD$Monitor is blocked by the bundler. This is probably the reason why the heartbeat timeouts are not noticed.



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