Colm O hEigeartaigh closed CXF-6593.

> Some thread-local contexts may get lost on the client side after a refresh
> --------------------------------------------------------------------------
>                 Key: CXF-6593
>                 URL: https://issues.apache.org/jira/browse/CXF-6593
>             Project: CXF
>          Issue Type: Bug
>          Components: JAX-RS
>            Reporter: Sergey Beryozkin
>            Assignee: Sergey Beryozkin
>             Fix For: 3.1.3, 2.7.18, 3.0.7
> CXF JAX-RS keeps references to thread local proxies which have been injected 
> into class resources or providers in a weak hash map, with the map itself set 
> as a property on a bus. 
> Previously there were kept in a plain hash map but in containers like TomEE 
> this was resulting in a the wars being not released due to the default/shared 
> bus still being around, while keeping the strong references.
> Having a weak hash map apparently has some difficult to reproduce 
> side-effects on the *client* side where some refreshes are happening.
> The short term solution is to protect against possible NPE in thread local 
> proxy implementations which represent contexts that might be used on the 
> client side. This is Providers (used by CXF providers and Jackson) and CXF 
> MessageContext.
> A more effective solution would need to be done on the new trunk due to the 
> high sensitivity of the possible refactoring of the way thread local proxies 
> are implemented, etc...

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