Why "consumer.each_message..." not looping indefinitely

[drhuffman12]

Maybe I'm doing something wrong; or maybe there is an issue?

• Version of Ruby:

  $ ruby -v
  ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-linux]
  

• Version of Kafka:

  $ bin/kafka-configs.sh --version
  2.4.1 (Commit:c57222ae8cd7866b)
  

• Version of ruby-kafka:

  $ gem list | grep kafka
  ruby-kafka (1.5.0)
  

Please verify that the problem you're seeing hasn't been fixed by the current master of ruby-kafka.

• I noticed that the latest release is 1.4.0. Is there a regression in the master branch (which is showing v 1.5.0) that caused this issue?

Steps to reproduce

Using the example at https://github.com/zendesk/ruby-kafka#consumer-groups, I see consumer.each_message(..) grab existing messages from the topic, then it just hangs.

I had the same kinda of issue when getting messages via kafka.each_message(...)

Expected outcome

The consumer should continuously receive messages.

Actual outcome

The consumer receives existing messages then stops receiving new messages.

See also

• repo: https://github.com/drhuffman12/kafka-course
• files:
  • Ruby/lab4/solutions/lib/kafka_example.rb
  • https://github.com/drhuffman12/kafka-course/blob/main/Ruby/lab3/solutions/lib/kafka_example/kafka_api.rb#L19
  • https://github.com/drhuffman12/kafka-course/blob/5887798c72181774e9b64bd6b452e13f0862e8bd/Ruby/lab4/solutions/lib/kafka_example/lab4_example_storms.rb#L70

[github-actions]

Issue has been marked as stale due to a lack of activity.