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

[Tomas Sykora (JIRA)]

Tomas Sykora created ISPN-4343:
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             Summary: 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


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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