Jason Gustafson created KAFKA-7298:
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Summary: Concurrent DeleteRecords can lead to fatal OutOfSequence
error in producer
Key: KAFKA-7298
URL: https://issues.apache.org/jira/browse/KAFKA-7298
Project: Kafka
Issue Type: Bug
Reporter: Jason Gustafson
Assignee: Jason Gustafson
We have logic in the producer to handle unknown producer errors. Basically when
the producer gets an unknown producer error, it checks whether the log start
offset is larger than the last acknowledged offset. If it is, then we know the
error is spurious and we reset the sequence number to 0, which the broker will
then accept.
It can happen after a DeleteRecords call, however, that the only record
remaining in the log is a transaction marker, which does not have a sequence
number. The error we get in this case is OUT_OF_SEQUENCE rather than
UNKNOWN_PRODUCER, which is fatal.
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