Jun Rao created KAFKA-1301:
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             Summary: system testcase_0206 fails using the new producer
                 Key: KAFKA-1301
                 URL: https://issues.apache.org/jira/browse/KAFKA-1301
             Project: Kafka
          Issue Type: Bug
    Affects Versions: 0.8.2
            Reporter: Jun Rao


The problem is that the producer doesn't drain the unsent data properly on 
close. The problem is in the following code. It's possible for this loop to 
exit with unfinished requests.

        // okay we stopped accepting requests but there may still be
        // requests in the accumulator or waiting for acknowledgment,
        // wait until these are completed.
        int unsent = 0;
        do {
            try {
                unsent = run(time.milliseconds());
            } catch (Exception e) {
                log.error("Uncaught error in kafka producer I/O thread: ", e);
            }
        } while (unsent > 0 || this.inFlightRequests.totalInFlightRequests() > 
0);

Suppose that all produce requests are being sent, but the sender is waiting for 
responses. Then the broker failed. In handling disconnects, we cleared all 
inflight requests. When we check the condition in the while clause, there is no 
unsent data and no in flight requests. However, failed records have been added 
to RecordAccumulator and are ready to be sent in the next iteration.



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