Local: Queue full and not producing for hours

[KyleGrains]

Hi, everyone, I have been using librdkafka 1.4, as a producer producing a lot of messages in one second.

However getting "Queue full" in some situations, in which case not writing any message to Kafka for hours and showing this message all the time.

I am using the default configuration for producer, and calling poll(100) in case ERR__QUEUE_FULL returned.

My question is:
Is the producer not writing anything to Kafka for hours a normal behaviour in case of queue full?

If so, I will just tune the buffering messages/kbytes/ms configurations and let it be.

[KyleGrains]

I just found out the reason is the producer handle leaked when recreated, causing the message queue size not decreasing and full.