Tomoyuki Saito created KAFKA-9301:
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             Summary: KafkaProducer#flush should block until all the sent 
records get completed
                 Key: KAFKA-9301
                 URL: https://issues.apache.org/jira/browse/KAFKA-9301
             Project: Kafka
          Issue Type: Bug
          Components: producer 
    Affects Versions: 0.11.0.0
            Reporter: Tomoyuki Saito


h2. ProducerBatch split makes ProducerBatch.produceFuture completed 

KAFKA-3995 introduced ProducerBatch split and resend when 
RecordTooLargeException happens on broker side. When ProducerBatch split 
happens, ProducerBatch.produceFuture becomes completed, even though records in 
a batch will be resent to a broker.

h2. KafkaProducer#flush implementation

With the current implementation, KafkaProducer#flush blocks until accumulated 
ProducerBatches to be completed. As described above, that does not ensure all 
the sent records get completed.

This issue is also mentioned in: https://github.com/apache/kafka/pull/6469



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