HI, As a part of this commit,
https://github.com/apache/logging-log4j2/commit/97db5743a3b10e9017bf70794d6275b21553dd44,
the thread leak issue was fixed. But did it introduce a bug? What if the
KafkaAppender is stopped? In the calls hierarchy, the KafkaManager.stop() is
called. This in turn calls KakfaManager.releaseSub() which calls
KafakManager.closeProducer(). The closeProducer() closes the producer. Now when
you try to start the KafkaAppender and append a message using
KafkaAppender.append() the following message is seen
"Cannot perform operation after producer has been closed".
Please let me know if you see this as a bug.
Regards,Bhavesh.
