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Posted to dev@kafka.apache.org by "Matthias J. Sax (Jira)" <ji...@apache.org> on 2026/05/15 22:34:00 UTC
[jira] [Resolved] (KAFKA-1313) Support adding replicas to existing topic partitions via kafka-topics tool without manually setting broker assignments
[ https://issues.apache.org/jira/browse/KAFKA-1313?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Matthias J. Sax resolved KAFKA-1313.
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Resolution: Abandoned
> Support adding replicas to existing topic partitions via kafka-topics tool without manually setting broker assignments
> ----------------------------------------------------------------------------------------------------------------------
>
> Key: KAFKA-1313
> URL: https://issues.apache.org/jira/browse/KAFKA-1313
> Project: Kafka
> Issue Type: New Feature
> Components: tools
> Affects Versions: 0.8.0
> Reporter: Marc Labbe
> Assignee: Sreepathi Prasanna
> Priority: Major
> Labels: newbie++
>
> There is currently no easy way to add replicas to an existing topic partitions.
> For example, topic create-test has been created with ReplicationFactor=1:
> Topic:create-test PartitionCount:3 ReplicationFactor:1 Configs:
> Topic: create-test Partition: 0 Leader: 1 Replicas: 1 Isr: 1
> Topic: create-test Partition: 1 Leader: 2 Replicas: 2 Isr: 2
> Topic: create-test Partition: 2 Leader: 3 Replicas: 3 Isr: 3
> I would like to increase the ReplicationFactor=2 (or more) so it shows up like this instead.
> Topic:create-test PartitionCount:3 ReplicationFactor:2 Configs:
> Topic: create-test Partition: 0 Leader: 1 Replicas: 1,2 Isr: 1,2
> Topic: create-test Partition: 1 Leader: 2 Replicas: 2,3 Isr: 2,3
> Topic: create-test Partition: 2 Leader: 3 Replicas: 3,1 Isr: 3,1
> Use cases for this:
> - adding brokers and thus increase fault tolerance
> - fixing human errors for topics created with wrong values
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