RabbitMq version (#5.20.0)- DefaultConsumer nextDelivery() method is not available

[mageshmani18]

Hello,

The nextDelivery() method is not available, and it seems like deprecated in the latest version(#5.20.0) of rabbitmq.

Please suggest me how to get the delivery using DefaultConsumer.

Thanks,
Magesh M

[michaelklishin]

As demonstrated in the tutorials and the Java client API doc guide.

DO NOT use QueueingConsumer (a Consumer implementation that does provide nextDelivery), it is deprecated and will be removed in a later version. In fact, I am very surprised that we haven't removed it yet.

[acogoluegnes]

QueueingConsumer is in the test directory, it should not be available in the JAR file. It's a handy class for testing, but it has limitations for production use.

It was removed from the main distribution in 5.0.0 (September 2017).

[michaelklishin]

Ahhh, OK then :) Yes, it is OK for isolated tests but is too prone to cause JVM heap explosions under load with a high prefetch number (or in automatic acknowledgement modes).

I'm explaining this to those landing here from Google searches, not to Arnaud, of course :)