[KAFKA-14121] AlterPartitionReassignments API should allow callers to specify the option of preserving the replication factor

• Type: New Feature
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Assignee: Stanislav Kozlovski
• Reporter: Stanislav Kozlovski
• Created: 28/Jul/22 08:52
• Updated: 08/Aug/22 06:36

Description

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 unintentionally increasing the replication factor for a partition.
It would be useful to have some sort of guardrail against this happening 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