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https://issues.apache.org/jira/browse/KAFKA-14121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kuan Po Tseng resolved KAFKA-14121.
-----------------------------------
Resolution: Fixed
> AlterPartitionReassignments API should allow callers to specify the option of
> preserving the replication factor
> ---------------------------------------------------------------------------------------------------------------
>
> Key: KAFKA-14121
> URL: https://issues.apache.org/jira/browse/KAFKA-14121
> Project: Kafka
> Issue Type: New Feature
> Reporter: Stanislav Kozlovski
> Assignee: Kuan Po Tseng
> Priority: Minor
> Fix For: 4.1.0
>
>
> Using Kafka's public APIs to get metadata regarding the non-reassigning
> replicas for a topic is unreliable and prone to race conditions.
> If a person or a system is to rely on the provided metadata, it can end up
> {color:#202124}unintentionally {color}increasing the replication factor for a
> partition.
> It would be useful to have some sort of guardrail against this happening
> {color:#202124}inadvertently.
> See
> [https://cwiki.apache.org/confluence/display/KAFKA/KIP-860%3A+Add+client-provided+option+to+guard+against+replication+factor+change+during+partition+reassignments]
> for more detail{color}
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