[jboss-jira] [JBoss JIRA] (JGRP-2387) Message from a non-member causes FD_ALL to continually suspect it

[Bela Ban (Jira)]

    [ https://issues.jboss.org/browse/JGRP-2387?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13794387#comment-13794387 ] 

Bela Ban commented on JGRP-2387:
--------------------------------

Workaround to make the warnings go away:
* Set VERIFY_SUSPECT.use_icmp to true
* Remove VERIFY_SUSPECT
* Increase UDP.who_has_cache_timeout (this should reduce the frequency of the warnings, but not completely eliminate them)

I haven't tried these, but perhaps it's worth experimenting with these workaround until I have a fix?

> Message from a non-member causes FD_ALL to continually suspect it
> -----------------------------------------------------------------
>
>                 Key: JGRP-2387
>                 URL: https://issues.jboss.org/browse/JGRP-2387
>             Project: JGroups
>          Issue Type: Bug
>    Affects Versions: 4.0.1
>            Reporter: Dennis Reed
>            Assignee: Bela Ban
>            Priority: Major
>             Fix For: 4.1.6
>
>         Attachments: Test.java
>
>
> If an FD_ALL control message from a non-member is seen by FD_ALL, it will start continually suspecting that node. If msg_counts_as_heartbeat=true then any message from a non-member triggers the issue. The issue is cleared on the next view change.
> This does not cause any functional issues in the cluster, but can cause repeated WARN logs in some cases.



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