[infinispan-issues] [JBoss JIRA] (ISPN-4366) RHQ JMX plugin provides unstable availability check with extensive deployments

[William Burns (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-4366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12974521#comment-12974521 ] 

William Burns commented on ISPN-4366:
-------------------------------------

I believe when I was working [~tsykora] on Friday, I had him upgrade the rhq-jmx plugin distributed by rhq to the newer version.  The newer version has a new mc4j jar that I identified an issue that the RHQ guys had fixed.  I believe with the new jar everything was alright, but I would need [~tsykora] to confirm it is still working fine today or not.  If not I will need to figure out a way to have a larger deployment to test this on myself.

> RHQ JMX plugin provides unstable availability check with extensive deployments
> ------------------------------------------------------------------------------
>
>                 Key: ISPN-4366
>                 URL: https://issues.jboss.org/browse/ISPN-4366
>             Project: Infinispan
>          Issue Type: Bug
>          Components: JMX, reporting and management
>    Affects Versions: 7.0.0.Alpha4
>            Reporter: Tomas Sykora
>            Assignee: William Burns
>              Labels: 63gablocker, rhq
>
> Availability check was greatly improved by changes introduced in https://issues.jboss.org/browse/ISPN-4236 and https://issues.jboss.org/browse/ISPN-4235.
> This works pretty well in case of one deployment of an embedded application on one application server, which is monitored by an agent.
> However, when we try to monitor more deployments by the same agent (app servers, switched ports, each one with its own deployment), the process of availability checking is unstable. 
> Cache managers / caches... are reported repeatedly UP and DOWN, UP and DOWN. See linked bugzilla with attached screenshots depicting this issue.
> I suspect higher number of MBeans to cause this problem. 
> When we deploy on 2 servers, one of them for example was able to stabilize availability check after 2 hours and then, it stays UP.
> During deployment in 2xdomain mode = 4 servers, availability check "is skipping, jumping" UP, DOWN, UP, DOWN... etc. again, see screenshots in BZ.



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