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https://issues.apache.org/jira/browse/KAFKA-6488?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dong Lin resolved KAFKA-6488.
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Resolution: Won't Do
> Prevent log corruption in case of OOM
> -------------------------------------
>
> Key: KAFKA-6488
> URL: https://issues.apache.org/jira/browse/KAFKA-6488
> Project: Kafka
> Issue Type: Bug
> Reporter: Dong Lin
> Assignee: Dong Lin
> Priority: Major
>
> Currently we will append the message to the log before updating the LEO.
> However, if there is OOM in between these two steps, KafkaRequestHandler
> thread can append a message to the log without updating the LEO. The next
> message may be appended with the same offset as the first message. This can
> prevent broker from being started because two messages have the same offset
> in the log.
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