Why not a synchronized list? The performance might not be optimal, but
probably be OK for unit tests.

On Thu, Sep 8, 2016 at 10:34 PM, Gary Gregory <garydgreg...@gmail.com>
wrote:

> Should ListAppender use CopyOnWriteArray instead of ArrayList? Either all
> the time or when using in aync tests?
>
> Gary
>
> --
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