[infinispan-issues] [JBoss JIRA] (ISPN-2632) Uneven request balancing after node crash

[Galder Zamarreño (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-2632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12745341#comment-12745341 ] 

Galder Zamarreño commented on ISPN-2632:
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Michal, thx for attaching the logs. It only contains TRACE on client but it's Ok.

Taking one client as example (https://gist.github.com/4511311), the number of servers sent back looks right (missing 192.168.87.122), so it doesn't appear to be an issue with the way view is managed. IMO, it seems to be more of an issue with hashing itself.

Looking at the cached positions on the client, I don't see anything wrong at 1st glance: https://gist.github.com/4511569. The positions taken by .122 appear to have gone. Doesn't seem to be a problem with node4 taking more positions on the hash map.

I wonder if this issue has to do with ISPN-2670? I see org.infinispan.client.hotrod.impl.protocol.Codec12 in the logs, but ISPN-2670 seems to imply that Hot Rod client does not work with version 1.2 of the protocol.

I'm gonna tackle ISPN-2670 first and then we can see if the issue is still there.
                
> Uneven request balancing after node crash
> -----------------------------------------
>
>                 Key: ISPN-2632
>                 URL: https://issues.jboss.org/browse/ISPN-2632
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Remote protocols
>    Affects Versions: 5.2.0.CR1
>            Reporter: Michal Linhard
>            Assignee: Galder Zamarreño
>            Priority: Critical
>             Fix For: 5.2.0.CR2, 5.2.0.Final
>
>
> This is a new manifestation of ISPN-1995, but in this case this happens after killing only one node: the hot rod requests aren't very well balanced.
> these runs still manifest also ISPN-2550 and it may be cause of this bug.
> The uneven balancing of requests can be seen here:
> https://jenkins.mw.lab.eng.bos.redhat.com/hudson/view/EDG6/view/EDG-REPORTS-RESILIENCE/job/edg-60-resilience-dist-4-3/59/artifact/report/stats-throughput.png

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