Re: java.lang.ClassCastException: org.apache.log4j.bridge.AppenderWrapper cannot be cast to org.apache.log4j.FileAppender

On Sat, Mar 5, 2022 at 10:50 PM Gary Gregory <[email protected]> wrote:
> This is a bit tricky, the API is typed to return an Appender and that's
> what we do, not only that but it is an Appender that behaves properly IIRC.
> If we returned the wrapped Log4j 1 Appender and you call it, the wrong
> thing will happen IIRC.

The only problem I see in unwrapping an `AppenderAdapter` is in the
case filters are configured. Since `AppenderSkeleton` does not perform
filtering, this would cause the returned appender to behave
incorrectly. If no filters are configured (including the one created
from the `Threshold` property), we can unwrap the `AppenderAdapter`
safely.

Can you have a look at:

https://github.com/apache/logging-log4j2/pull/786

If  this solves Pooja's problem, I can merge it.

Piotr