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A public interface is any change to the following:

• Binary log format

  • No changes expected

• The network protocol and api behavior

  • No changes expected

• Any class in the public packages under clientsConfiguration, especially client configuration

  • org/apache/kafka/common/serialization

    • No changes expected

  • org/apache/kafka/common

    • No changes expected

  • org/apache/kafka/common/errors

    • InvalidNamespaceException will be added

  • org/apache/kafka/clients/producer

    • No changes expected

  • org/apache/kafka/clients/consumer (eventually, once stable)

    • No changes expected

• Monitoring

• Command line tools and arguments

  • An optional {{namespace}} option will be added to existing tools. If namespace is not provided, a default namespace of "" will be used.

• Anything else that will likely break existing users in some way when they upgrade
  • 
    

Proposed Changes

We are proposing following changes in the storage layout of Zookeeper entities and logs on disk.

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