Rajini Sivaram created KAFKA-14352:
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Summary: Support rack-aware partition assignment for Kafka
consumers
Key: KAFKA-14352
URL: https://issues.apache.org/jira/browse/KAFKA-14352
Project: Kafka
Issue Type: New Feature
Components: consumer
Reporter: Rajini Sivaram
Assignee: Rajini Sivaram
Fix For: 3.4.0
KIP-392 added support for consumers to fetch from the replica in their local
rack. To benefit from locality, consumers need to be assigned partitions which
have a replica in the same rack. This works well when replication factor is the
same as the number of racks, since every rack would then have a replica with
rack-aware replica assignment. If the number of racks is higher, some racks may
not have replicas of some partitions and hence consumers in these racks will
have to fetch from another rack. It will be useful to propagate rack in the
subscription metadata for consumers and provide a rack-aware partition assignor
for consumers.
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