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• The request can be sent to any broker.
• The request  requires the ClusterAction the Alter operation on the CLUSTER resource, since it can require significant inter-broker communication.
• The request is subject to the CreateTopicPolicy of the broker as configured by the broker's create.topic.policy.class.name config property. This is to ensure that the policy applies to topics modified after creation.
• After validating the request the broker writes reassignment JSON to the /admin/reassign_partitions znode

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The request  requires the ClusterAction Alter operation on the CLUSTER resource, since it can affect significant inter-broker communication.

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