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https://issues.apache.org/jira/browse/KAFKA-573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13479429#comment-13479429
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Neha Narkhede commented on KAFKA-573:
-------------------------------------
+1, this one was fun to track down. Reminded me of the FileChannel truncate bug.
Minor comment - Probably best to delete the info statement -
info("After changed to position %d with size %d".format(channel.position(),
channel.size()))
> System Test : Leader Failure Log Segment Checksum Mismatched When
> request-num-acks is 1
> ---------------------------------------------------------------------------------------
>
> Key: KAFKA-573
> URL: https://issues.apache.org/jira/browse/KAFKA-573
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 0.8
> Reporter: John Fung
> Assignee: Jun Rao
> Fix For: 0.8
>
> Attachments: acks1_leader_failure_data_loss.tar.gz, kafka-573.patch,
> kafka-573-reproduce-issue.patch
>
>
> • Test Description:
> 1. Start a 3-broker cluster as source
> 2. Send messages to source cluster
> 3. Find leader and terminate it (kill -15)
> 4. Start the broker again
> 5. Start a consumer to consume data
> 6. Compare the MessageID in the data between producer log and consumer log.
> • Issue: There will be data loss if request-num-acks is set to 1.
> • To reproduce this issue, please do the followings:
> 1. Download the latest 0.8 branch
> 2. Apply the patch attached to this JIRA
> 3. Build kafka by running "./sbt update package"
> 4. Execute the test in directory "system_test" : "python -B
> system_test_runner.py"
> 5. This test will execute testcase_2 with the following settings:
> Replica factor : 3
> No. of partitions : 1
> No. of bouncing : 1
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