anchor.diff: -= Kafka Java Client
  -:hp-tags: kafka, java
  += Scaling Kafka
  +:hp-tags: kafka
   :published_at: 2016-10-17
   :hp-image: /images/logos/kafka.png
   :sourcedir: ../sources
  
positive.code: 
  == Adding a broker node
  
  Now we will add a fourth node: 3.
  Once the node is started and as successfully joined the cluster,
  it doesn't automatically receive partitions assignments:
  
  
negative.code:         Topic: test_topic       Partition: 4    Leader: 1       Replicas: 1,2   Isr: 1,2
  ----
  
  image::2016-10-17-Scaling-Kafka/kafka-rack.svg[Rack awareness]
  
  == Simple scaling
  
  