fix: assign sequence when flushing retry buffers #3362
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As noted in #3354, messages buffered due to the highWatermark would inadvertently skip the usual sequence number assignment, manifesting as OutOfOrderSequenceException on the broker. Wrote a functional test to trigger this behaviour and then used the same logic as found in partitionProducer.dispatch() to prevent the problem occurring. Signed-off-by: Dominic Evans <[email protected]>
hindessm
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Oct 26, 2025
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As noted in #3354, messages buffered due to the highWatermark would inadvertently skip the usual sequence number assignment, manifesting as OutOfOrderSequenceException on the broker.
Wrote a functional test to trigger this behaviour and then used the same logic as found in partitionProducer.dispatch() to prevent the problem occurring.