Jason Gustafson created KAFKA-8483:
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Summary: Possible reordering of messages by producer after
UNKNOWN_PRODUCER_ID error
Key: KAFKA-8483
URL: https://issues.apache.org/jira/browse/KAFKA-8483
Project: Kafka
Issue Type: Bug
Reporter: Jason Gustafson
Assignee: Jason Gustafson
The 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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