[jboss-jira] [JBoss JIRA] (WFLY-5921) Locale cache set to simple cache automatically breaks map reduce

[Paul Ferraro (JIRA)]

     [ https://issues.jboss.org/browse/WFLY-5921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul Ferraro closed WFLY-5921.
------------------------------
    Resolution: Rejected


Infinispan map-reduce API is scheduled for deprecation (in 8.x) in favor of distributed streams.  Migrating to this API should be fairly trivial.  See:
https://github.com/infinispan/infinispan/wiki/Distributed-Stream-Support

> Locale cache set to simple cache automatically breaks map reduce
> ----------------------------------------------------------------
>
>                 Key: WFLY-5921
>                 URL: https://issues.jboss.org/browse/WFLY-5921
>             Project: WildFly
>          Issue Type: Bug
>          Components: Clustering
>    Affects Versions: 10.0.0.CR5
>            Reporter: Stian Thorgersen
>            Assignee: Paul Ferraro
>            Priority: Critical
>
> We use the Infinispan subsystem to create/configure caches for Keycloak. In standalone mode Keycloak uses locale-caches, while in clustered mode we use a combination of invalidation caches and distributed caches. In both clustered and non-clustered mode we use map-reduce tasks to delete elements from the cache.
> This has worked just fine until the recent change in CR5 where locale-caches are now set to simple-caches (WFLY-5327). As the caches are now automatically set to simple-caches map-reduce is no longer available. There's also no way to prevent this.
> IMO the changes from WFLY-5327 should be reverted and instead a new simple-cache element should be added, or a simple-cache=true attribute added to the locale-cache element.
> As it stands this change prevents us from upgrading to CR5.



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