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  1. Kafka
  2. KAFKA-9830

DeadLetterQueueReporter leaks KafkaProducer instance

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.0.0
    • Fix Version/s: 2.3.2, 2.6.0, 2.4.2, 2.5.1
    • Component/s: KafkaConnect
    • Labels:
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      Description

      The DeadLetterQueueReporter (introduced by KAFKA-6738) creates a KafkaProducer to report errors to Kafka, but does not clean up the producer, leaving many idle network threads open after tasks are stopped.

      Reproduction steps:
      Start a task that has a non-empty DLQ topic name
      Stop the task
      Observe the list of running threads

      Expected result:
      There is no thread related to the stopped task's DLQ left running

      Actual result:
      There is a thread named something like kafka-producer-network-thread | connector-dlq-producer-task-0" #1234 left running

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              • Assignee:
                gharris1727 Greg Harris
                Reporter:
                gharris1727 Greg Harris
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                • Created:
                  Updated:
                  Resolved: