[
https://issues.apache.org/jira/browse/KAFKA-590?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
John Fung closed KAFKA-590.
---------------------------
> System Test - 4 cases failed due to insufficient no. of retry in
> ProducerPerformance
> ------------------------------------------------------------------------------------
>
> Key: KAFKA-590
> URL: https://issues.apache.org/jira/browse/KAFKA-590
> Project: Kafka
> Issue Type: Bug
> Reporter: John Fung
>
> 1. Functional Test Area : Replication with Leader Hard Failure (1 Topic, 3
> Partitions)
> 2. Testcases failed :
> 0151 (Sync Producer, Acks = -1, No Compression)
> 0152 (Async Producer, Acks = -1, No Compression)
> 0155 (Sync Producer, Acks = -1, Compressed)
> 0156 (Async Producer, Acks = -1, Compressed)
> 3. Sample test results :
> 2012-10-25 18:22:20,206 - INFO -
> ======================================================
> 2012-10-25 18:22:20,206 - INFO - validating data matched
> 2012-10-25 18:22:20,206 - INFO -
> ======================================================
> 2012-10-25 18:22:20,206 - DEBUG - request-num-acks [-1]
> (kafka_system_test_utils)
> 2012-10-25 18:22:20,228 - INFO - no. of unique messages on topic [test_1]
> sent from publisher : 900 (kafka_system_test_utils)
> 2012-10-25 18:22:20,235 - INFO - no. of unique messages on topic [test_1] at
> simple_consumer_1.log : 853 (kafka_system_test_utils)
> 2012-10-25 18:22:20,242 - INFO - no. of unique messages on topic [test_1] at
> simple_consumer_2.log : 853 (kafka_system_test_utils)
> 2012-10-25 18:22:20,247 - INFO - no. of unique messages on topic [test_1] at
> simple_consumer_3.log : 853 (kafka_system_test_utils)
> 4. Investigations :
> a. Merge log segment files per partition:
> Under test_1351181987/testcase_0151/logs/broker-1/kafka_server_1_logs:
> cat test_1-0/00000000000000000000.log >>
> merged_test_1_0/00000000000000000000.log
> cat test_1-0/00000000000000000197.log >>
> merged_test_1_0/00000000000000000000.log
> . . .
> b. Retrieve all CRC from merged data log segment:
> bin/kafka-run-class.sh kafka.tools.DumpLogSegments
> merged_test_1_0/00000000000000000000.log | grep crc | sed 's/.* crc: //' |
> sort -u > test_1_0_crc.log
> . . .
> c. Merge the CRC files together:
> cat test_1_0_crc.log >> all_crc.log
> cat test_1_1_crc.log >> all_crc.log
> cat test_1_2_crc.log >> all_crc.log
> d. Sort the merged CRC file:
> cat all_crc.log | sort -u > all_crc_sorted.log
> e. Get the no. of 'failed to send' CRC in producer_performance.log (70 in
> this case):
> grep 'failed to send' producer_performance.log | sed 's/.* crc = //' | sed
> 's/, key = null.*//' | sort -u | wc -l
> 70
> f. Match those 'failed to send' CRC from producer_performance.log to see how
> many messages eventually got retried to send successfully:
> $ for i in `grep 'failed to send'
> ../../producer_performance-4/producer_performance.log | sed 's/.* crc = //' |
> sed 's/, key = null.*//' | sort -u`; do echo -n "$i => "; grep $i
> all_crc_sorted.log || echo "n/a"; done;
> . . .
> 1302684126 => n/a
> 1456125554 => 1456125554
> 15299643 => n/a
> 1653550869 => 1653550869
> 1741661084 => n/a
> 1764395211 => 1764395211
> . . .
> (23 msgs are sent successfully in retry)
> g. As a result, (70 messages 'failed to send' in producer_performance.log -
> 23 messages successfully sent in retry) = 47 messages are lost (which matches
> the data loss count in the test result)
> Therefore, if the no. of retry is increased to a higher value, all the
> messages could be sent successfully.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
