anchor.diff:  [[kafka_rack]]
   ===== Kafka rack
   
  -It's possible to enable the Kafka rack support specifying a JSON string for the `kafka-rack` field in the cluster ConfigMap.
  +It is possible to enable Kafka rack-awareness by specifying a JSON string for the `kafka-rack` field in the cluster ConfigMap.
   Such a JSON object has one mandatory field named `topologyKey`.
  -This key needs to match with one of the labels assigned to the {ProductPlatformName} cluster nodes in order to use them for
  -scheduling Kafka brokers across the nodes themselves in different "racks".
  -If the {ProductPlatformName} cluster is running on a cloud provider platform, that label should represent the availability zone
  -where the node is running.
  +This key needs to match one of the labels assigned to the {ProductPlatformName} cluster nodes.
  +The label is used by {ProductPlatformName} when scheduling Kafka broker pods to nodes. 
  +{ProductPlatformName} will try to minimize the number of pods scheduled on nodes with the same label value.
  +If the {ProductPlatformName} cluster is running on a cloud provider platform, that label should represent the availability zone where the node is running.
  +This will have the effect of spreading the broker pods across the availability zones, and also setting the brokers `rack.id` configuration parameter.
   
   .Example Kafka rack JSON configuration
   [source,json]
  
positive.code: A JSON string allowing the JVM running Kafka to be configured.
  The accepted JSON format is described in the <<jvm_json_config>> section.
  `kafka-rack`::
  A JSON string allowing the Kafka rack feature to be configured and used in rack aware replication assignment for fault tolerance.
  The accepted JSON format is described in the <<kafka_rack>> section.
  `zookeeper-nodes`::
  Number of Zookeeper nodes.
  
negative.code: }
  ----
  
  In the above example, the `failure-domain.beta.kubernetes.io/zone` node label will be used for scheduling Kafka broker Pods.
  
  [[topic_operator_json_config]]
  ===== Topic Operator
  