[infinispan-issues] [JBoss JIRA] (ISPN-4343) Rest rolling upgrades, distributed -- new cluster can't load from old cluster properly

[Tristan Tarrant (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-4343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12973661#comment-12973661 ] 

Tristan Tarrant commented on ISPN-4343:
---------------------------------------

Tomas, I see something very dangerous there: 

JGRP000010: packet from 10.200.136.193:45688 has different version (3.4.3) than ours (3.5.0); packet is discarded

which means that both clusters are on the same multicast address. This MUST NOT be.

> Rest rolling upgrades, distributed -- new cluster can't load from old cluster properly
> --------------------------------------------------------------------------------------
>
>                 Key: ISPN-4343
>                 URL: https://issues.jboss.org/browse/ISPN-4343
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Loaders and Stores, Server
>    Affects Versions: 7.0.0.Alpha4
>            Reporter: Tomas Sykora
>            Assignee: Dan Berindei
>            Priority: Critical
>              Labels: rolling_upgrade
>         Attachments: ISPN-4343.txt, ISPN-4343.zip
>
>
> A try to mimic the process of REST Rolling Upgrades for one old and new server in a clustered environment failed.
> Scenario is quite simple, we start 2 old servers, store some data in, start 2 new servers and point clients to that new cluster.
> When issuing a get on a new cluster (want to fetch old entry from old store), the operation fails with attached stack trace.
> I also include current ISPN testsuite where is added testRestRollingUpgradesDiffVersionsDist test as a reproducer.
> Respective changes are mirrored in my remote branch: https://github.com/tsykora/infinispan/tree/ISPN-4330
> You can run test like: 
> mvn clean verify -P suite.rolling.upgrades -Dzip.dist.old=/home/you/servers/previous-ispn-server-version.zip -Dtest=RestRollingUpgradesTest#testRestRollingUpgradesDiffVersionsDist



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