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https://issues.apache.org/jira/browse/KAFKA-12682?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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jacky resolved KAFKA-12682.
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Resolution: Not A Problem
> Kraft MetadataPartitionsBuilder _localChanged and _localRemoved out of order
> -----------------------------------------------------------------------------
>
> Key: KAFKA-12682
> URL: https://issues.apache.org/jira/browse/KAFKA-12682
> Project: Kafka
> Issue Type: Bug
> Components: core
> Affects Versions: 2.8.0
> Reporter: jacky
> Priority: Minor
>
> In version 2.8, MetadataPartitionsBuilder has the field _localChanged and
> _localRemoved which record the change and delete partition, but we always
> process _localChanged partitions, and then _localRemoved in the
> kafka.server.RaftReplicaManager#handleMetadataRecords, not respect the
> original order, for example,
> 1. migrate the partition p1 from b0 to b1;
> 2. change the leader of p1
> 3.migrate p1 from b1 to b0
> and the _localRemoved will delete the p1 at last.
> and I think MetadataPartition should include topic uuid, and the topic name
> is optional, the topic name only can find the partition by the
> for example,
> create topic t1, delete topic t1, create topic t1, change leader of p1
> and then compact the records
> delete topic t1, change t1, p1
> but currently, implementation will be
> 1. process change t1, p1
> 2. process delete topic t1
> but the MetadataPartition doesn't include topic uuid, it only include topic
> name, when to stop, it can't find the origin topic id, and find the latest
> the topic id, but it's not right.
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