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https://issues.jboss.org/browse/WFLY-5921?page=com.atlassian.jira.plugin....
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Paul Ferraro commented on WFLY-5921:
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[~stianst] The simple-cache auto-conversion was done to address a performance issue (see
https://issues.jboss.org/browse/JBEAP-1905 for details) within the context of a feature
freeze. In general, map-reduce is not a supported use case in WildFly. Was I aware of
your use case before today, I would have made the implemented fix wouldn't break your
code.
Locale cache set to simple cache automatically breaks map reduce
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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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