5 minutes delay for delivery report.

[vincent910903]

Hi team, we are using node-rdkafka. During the network test, we always get error delivery-report callback after 5 minutes when our system got a network failure. We have tried to reduce the timeout parameters value (delivery.timeout.ms). But It was not working. Could you please give some guide to reduce the delay of the 'delivery-report' event callback?

[blockwooddev]

I am experiencing this issue as well

[kirrg001]

We have updated from 3.3.1 to 3.4.0 today and we also see problems with the delivery report.
I feel like its connected to #1128. Because the problem occurs when the connection is slow. Then I am seeing

rdkafka: 2.118s (time it needs to connect to Kafka)
error [LibrdKafkaError: Local: Broker transport failure] {
origin: 'local',
message: 'broker transport failure',
code: -1,
errno: -1
}
error [LibrdKafkaError: Local: All broker connections are down] {
origin: 'local',
message: 'all broker connections are down',
code: -1,
errno: -1
}
delivery-report: 30.026s

I have attached a zip, which reproduces the problem. You need to run the npm run start command a couple of times. The bug does not appear every time.

Running npm run start-prev (3.3.1) does not throw these errors at all, but the delivery report also takes around 2s. Not sure this is normal.

Tested with Kafka v2/v3.

reproduce-2.zip