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This KIP proposes introducing the concept of “cordoned” log directories. This is reusing the “cordon” terminology from Kubernetes. When a log directory is cordoned, it still fully functions but no new partitions can be allocated on it. If all the log directories of a broker are cordoned, the broker is effectively cordoned and no new partitions can be assigned to the that broker.
Cluster operators will be able to set the cordoned.log.dirs configuration on each broker. This can be set in the broker properties files when it is started and updated at runtime via the Admin client or using the kafka-configs.sh tool.
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