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  1. Kafka
  2. KAFKA-8483

Possible reordering of messages by producer after UNKNOWN_PRODUCER_ID error

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.3.0
    • Component/s: producer
    • Labels:
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      Description

      The idempotent producer attempts to detect spurious UNKNOWN_PRODUCER_ID errors and handle them by reassigning sequence numbers to the inflight batches. The inflight batches are tracked in a PriorityQueue. The problem is that the reassignment of sequence numbers depends on the iteration order of PriorityQueue, which does not guarantee any ordering. So this can result in sequence numbers being assigned in the wrong order.

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              • Assignee:
                hachikuji Jason Gustafson
                Reporter:
                hachikuji Jason Gustafson
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                • Created:
                  Updated:
                  Resolved: