Jason Gustafson created KAFKA-5730:
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Summary: Consumer should ensure consistent ordering between sync
and async offset commits
Key: KAFKA-5730
URL: https://issues.apache.org/jira/browse/KAFKA-5730
Project: Kafka
Issue Type: Bug
Components: consumer
Reporter: Jason Gustafson
Assignee: Jason Gustafson
Fix For: 1.0.0
If {{commitSync}} is called with an async offset commit in-flight, it is
possible (even likely) for it to return prior to the invocation of the async
callback even though the OffsetCommit request for the latter will have actually
completed first. In this case, the async callback is not invoked until the next
call to {{poll}}, which can lead to very confusing behavior since the client is
led to think that the async commit happened second.
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