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JIRA: KAFKA-5319
Released:
Motivation
I want to add a tool to make amounts of replicas and leaders on every brokers balanced.Current kafka server does not provide a function to make cluster balance.When we use console command to create a topic without 'replicaAssignmentOpt' ,kafka server assigns replicas by a "replicaAssignment" function . The function spread the replicas evenly among brokers to make cluster balanced.It can not make sure the cluster is balanced.Even though it is balanced,the balanced state will be destroyed.Example:
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