John Fung created KAFKA-716:
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Summary: SimpleConsumerPerformance does not consume all available
messages
Key: KAFKA-716
URL: https://issues.apache.org/jira/browse/KAFKA-716
Project: Kafka
Issue Type: Bug
Reporter: John Fung
To reproduce the issue:
1. Start 1 zookeeper
2. Start 1 broker
3. Send some messages
4. Start SimpleConsumerPerformance to consume messages. The only way to consume
all messages is to set the fetch-size to be greater than the log segment file
size.
5. This output shows that SimpleConsumerPerformance consumes only 6 messages:
$ bin/kafka-run-class.sh kafka.perf.SimpleConsumerPerformance --server
kafka://host1:9092 --topic topic_001 --fetch-size 2048 --partition 0
start.time, end.time, fetch.size, data.consumed.in.MB, MB.sec,
data.consumed.in.nMsg, nMsg.sec
2013-01-21 15:09:21:124, 2013-01-21 15:09:21:165, 2048, 0.0059, 0.1429, 6,
146.3415
6. This output shows that ConsoleConsumer consumes all 5500 messages (same test
as the above)
$ bin/kafka-run-class.sh kafka.consumer.ConsoleConsumer --zookeeper host2:2181
--topic topic_001 --consumer-timeout-ms 5000 --formatter
kafka.consumer.ChecksumMessageFormatter --from-beginning | grep ^checksum | wc
-l
Consumed 5500 messages
5500
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