[jboss-jira] [JBoss JIRA] (WFLY-12718) Clustering: replicated-cache sampling errors

[Tommasso Borgato (Jira)]

Tommasso Borgato created WFLY-12718:
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             Summary: Clustering: replicated-cache sampling errors
                 Key: WFLY-12718
                 URL: https://issues.jboss.org/browse/WFLY-12718
             Project: WildFly
          Issue Type: Bug
          Components: Clustering
    Affects Versions: 18.0.0.Final
            Reporter: Tommasso Borgato
            Assignee: Paul Ferraro


The issue is about replicated-cache in fail-over tests.
WildFly is started in clustered mode using a replicated cache for replicating HTTP session data across cluster nodes; all 4 nodes in the cluster are initialized with the following cli script:

{noformat}
embed-server --server-config=standalone-ha.xml
/subsystem=jgroups/channel=ee:write-attribute(name=stack,value=tcp)
/subsystem=infinispan/cache-container=web/replicated-cache=testRepl:add()
/subsystem=infinispan/cache-container=web/replicated-cache=testRepl/component=locking:write-attribute(name=isolation, value=REPEATABLE_READ)
/subsystem=infinispan/cache-container=web/replicated-cache=testRepl/component=transaction:write-attribute(name=mode, value=BATCH)
/subsystem=infinispan/cache-container=web/replicated-cache=testRepl/store=file:add()
/subsystem=infinispan/cache-container=web:write-attribute(name=default-cache, value=testRepl)
{noformat}


The test is run with wildfly-18.​0.0.Final.zip;
The same tests run with version wildfly-17.​0.1.Final.zip do not have any problem;
hence this looks like a regression;

As usual, we test that the serial value stored in the scattered cache is incremented at every call: when this is not true, we say we have a sampling error;

Here are the runs that exhibit this issue: 

- **22.82% Fail Rate** [eap-7.x-clustering-http-session-shutdown-repl#23|https://eap-qe-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/view/EAP7/view/EAP7-Clustering/view/EAP7-Clustering-HTTP-Session/job/eap-7.x-clustering-http-session-shutdown-repl/23/artifact/report/jm/html/index.html]
- **0% Fail Rate** [eap-7.x-clustering-http-session-shutdown-repl#24|https://eap-qe-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/view/EAP7/view/EAP7-Clustering/view/EAP7-Clustering-HTTP-Session/job/eap-7.x-clustering-http-session-shutdown-repl/24/artifact/report/jm/html/index.html]



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