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https://issues.apache.org/jira/browse/KAFKA-3525?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ismael Juma updated KAFKA-3525:
-------------------------------
Resolution: Fixed
Reviewer: Ismael Juma
Status: Resolved (was: Patch Available)
> max.reserved.broker.id off-by-one error
> ---------------------------------------
>
> Key: KAFKA-3525
> URL: https://issues.apache.org/jira/browse/KAFKA-3525
> Project: Kafka
> Issue Type: Bug
> Components: config
> Reporter: Alan Braithwaite
> Assignee: Manikumar Reddy
> Fix For: 0.10.1.0
>
>
> There's an off-by-one error in the config check / id generation for
> max.reserved.broker.id setting. The auto-generation will generate
> max.reserved.broker.id as the initial broker id as it's currently written.
> Not sure what the consequences of this are if there's already a broker with
> that id as I didn't test that behavior.
> This can return 0 + max.reserved.broker.id:
> https://github.com/apache/kafka/blob/8dbd688b1617968329087317fa6bde8b8df0392e/core/src/main/scala/kafka/utils/ZkUtils.scala#L213-L215
> However, this does a <= check, which is inclusive of max.reserved.broker.id:
> https://github.com/apache/kafka/blob/8dbd688b1617968329087317fa6bde8b8df0392e/core/src/main/scala/kafka/server/KafkaConfig.scala#L984-L986
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