Hi Suresh, and others, Thank you for your reply.
To provide some additional context: there is only one producer and one consumer running, and nothing else is currently interacting with this Kafka instance. Each time I run my test scenario, I start from a clean slate: 1. Deploy the Kafka instance in Docker 2. Create the "jupiter-events" topic 3. Start the consumer instance 4. Start the producer instance 5. Send a few test messages from the producer Despite this setup, the consumer still receives an empty list when polling. I’d appreciate any suggestions or insights on what might be going wrong. Thanks again for your time and support! Kind regards, Jakob ________________________________ Fra: Suresh Chidambaram <chida.sur...@gmail.com> Sendt: 21. juli 2025 12:06 Til: users@kafka.apache.org <users@kafka.apache.org> Emne: Re: Kafka Consumer Not Receiving Messages – Request for Help Hi Jakob, The consumer is not consuming the messages because the messages might have already been consumed using the consumer group, jupiter-workers. So, the options below will help you read the messages. 1. Change the group.id from jupiter-workers to something else like jupiter-workers-latest 2. Reset the consumer offset of the consumer group "jupiter-workers" of Topic "jupiter-events" to the beginning offset, and then start the consumer application Please reach out if any more details are needed. Thanks C Suresh +91 9042189457 On Mon, Jul 21, 2025 at 2:24 PM Jakob Molander <j...@geus.dk.invalid> wrote: > Hello everyone, > > I'm currently working with a single Kafka 3.9.1 instance running in > Docker, and I've set up a single topic named "jupiter-events". > > My Kafka producer is successfully sending messages to the topic, and I've > confirmed that these messages are being received by the Kafka instance. > > However, I'm facing an issue where my Kafka consumer does not receive any > messages when polling the topic. According to the logs, the consumer > appears to be functioning correctly, but it always receives an empty list > during polling. > > I've attached the configuration files and logs for both the producer and > the consumer for reference. > > Could anyone kindly take a look and let me know if there’s something I > might be missing? > > Thank you in advance for your time and assistance! > > Kind regards, > Jakob >
