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  1. Kafka
  2. KAFKA-9184

Redundant task creation and periodic rebalances after zombie worker rejoins the group

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Details

    • Bug
    • Status: Resolved
    • Blocker
    • Resolution: Fixed
    • 2.4.0, 2.3.2
    • 2.4.0, 2.5.0, 2.3.2
    • connect
    • None

    Description

      First reported here:

      https://stackoverflow.com/questions/58631092/kafka-connect-assigns-same-task-to-multiple-workers

      There seems to be an issue with task reassignment when a worker rejoins after an unsuccessful join request. The worker seems to be outside the group for a generation but when it joins again the same task is running in more than one worker

      Attachments

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. KAFKA-9385 Connect cluster: connector task repeat like a splitbrain cluster problem

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. KAFKA-9653 Duplicate tasks on workers after rebalance

          • Major - Major loss of function.
          • Resolved
          links to

          Web Link GitHub Pull Request #7771

          Web Link GitHub Pull Request #7783

          Activity

            People

              kkonstantine Konstantine Karantasis
              kkonstantine Konstantine Karantasis
              Randall Hauch Randall Hauch
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              Dates

                Created:
                Updated:
                Resolved: