[infinispan-issues] [JBoss JIRA] (ISPN-9561) GlobalConfiguration classloader reference should be strong

[Dan Berindei (JIRA)]

Dan Berindei created ISPN-9561:
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             Summary: GlobalConfiguration classloader reference should be strong
                 Key: ISPN-9561
                 URL: https://issues.jboss.org/browse/ISPN-9561
             Project: Infinispan
          Issue Type: Bug
          Components: Core
    Affects Versions: 9.4.0.CR3
            Reporter: Dan Berindei
            Assignee: Dan Berindei
             Fix For: 9.4.0.Final


{{GlobalConfiguration}} uses a {{WeakReference}} to store its classloader, in order to allow {{JCachingProvider}} to use a {{WeakHashMap<ClassLoader, DefaultCacheManager>}}.

The weak reference works fine when the classloader is the application classloader, but if the application (or the server, in our case) creates a {{ClassLoader}} instance just for the Infinispan configuration, that classloader can be garbage collected while the cache manager is starting. That is exactly what happens during server startup sometimes, making {{GlobalComponentRegistry}} use the TCCL for module initialization and ignoring all the non-core modules.

We can still use a {{WeakClassLoader}} adapter that wraps a {{WeakReference<ClassLoader>}} for {{JCachingProvider}}.




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