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From "Apurva Mehta (JIRA)" <j...@apache.org>
Subject [jira] [Created] (KAFKA-5870) Idempotent producer: a producerId reset causes undesirable behavior for inflight batches to other partitions
Date Mon, 11 Sep 2017 21:07:00 GMT
Apurva Mehta created KAFKA-5870:
-----------------------------------

             Summary: Idempotent producer: a producerId reset causes undesirable behavior
for inflight batches to other partitions
                 Key: KAFKA-5870
                 URL: https://issues.apache.org/jira/browse/KAFKA-5870
             Project: Kafka
          Issue Type: Bug
    Affects Versions: 0.11.0.0
            Reporter: Apurva Mehta
            Assignee: Apurva Mehta
             Fix For: 1.0.0


Currently, if we have to reset the producer id for any reason (for instance if batches to
a partition get expired, if we get an {{OutOfOrderSequenceException}}, etc) we could cause
batches to other --healthy-- partitions to fail with a spurious {{OutOfOrderSequenceException}}.

This is detailed in this PR discussion: https://github.com/apache/kafka/pull/3743#discussion_r137907630

Ideally, we would want all inflight batches to be handled to completion rather than potentially
failing them prematurely. Further, since we want to tighten up the semantics of the {{OutOfOrderSequenceException}},
at the very least we should raise another exception in this case, because there is no data
loss on the broker when the client gives up. 



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