rack.aware.assignment.traffic_cost — Kafka Kafka Streams Configuration
Cost associated with cross rack traffic. This config and rack.
Description
Cost associated with cross rack traffic. This config and rack.aware.assignment.non_overlap_cost controls whether the optimization algorithm favors minimizing cross rack traffic or minimize the movement of tasks in existing assignment. If set a larger value org.apache.kafka.streams.processor.internals.assignment.RackAwareTaskAssignor will optimize for minimizing cross rack traffic. The default value is null which means it will use default traffic cost values in different assignors.
Default Values by Kafka Version
| Kafka Version | Default Value |
|---|---|
| 3.6 | null |
| 3.7 | null |
| 3.8 | null |
| 3.9 | null |
| 4.0 | null |
| 4.1 | null |
| 4.2 | null |
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