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FAQs

What If the Consumer Group Failed to Be Found?

Symptom: An error message similar to the following is displayed. k-xx represents a created Kafka queue.

[2019-04-29 11:30:02,173] WARN Error while fetching metadata with correlation id 2 : {k-8*******8cd=UNKNOWN}

Possible causes and solutions:

  • If open JDK is used, use Oracle JDK instead.
  • Check if the consumer group is consistent with the topic. By default, a consumer group name starts with the letter g.
  • Check if project_id and target_project_id in the dms_kafka_client_jaas.conf file are inconsistent. The two parameters must have consistent values.
Parent topic: Java SDK