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  1. Kafka
  2. KAFKA-12574

Deprecate eos-alpha

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 3.0.0
    • Component/s: streams
    • Labels:

      Description

      In KIP-447 we introduced a new thread-producer which is capable of exactly-once semantics across multiple tasks. The new mode of EOS, called eos-beta, is intended to eventually be the preferred processing mode for EOS as it improves the performance and scaling of partitions/tasks. The only downside is that it requires brokers to be on version 2.5+ in order to understand the latest APIs that are necessary for this thread-producer.

      We should consider deprecating the eos-alpha config, ie StreamsConfig.EXACTLY_ONCE, to encourage new. & existing EOS users to migrate to the new-and-improved processing mode, and upgrade their brokers if necessary.

      Eventually we would like to be able to remove the eos-alpha code paths from Streams as this will help to simplify the logic and reduce the processing mode branching. But since this will break client-broker compatibility, and 2.5 is still a relatively recent version, we probably can't actually remove eos-alpha in the near future

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            • Assignee:
              ableegoldman A. Sophie Blee-Goldman
              Reporter:
              ableegoldman A. Sophie Blee-Goldman
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