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  1. Kafka
  2. KAFKA-2590 KIP-28: Kafka Streams Checklist
  3. KAFKA-2984

KTable should send old values along with new values to downstreams

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    Details

    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.10.0.0
    • Fix Version/s: 0.10.0.0
    • Component/s: streams
    • Labels:
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      Description

      Old values are necessary for implementing aggregate functions. KTable should augment an event with its old value. Basically KTable stream is a stream of (key, (new value, old value)) internally. The old value may be omitted when it is not used in the topology.

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            • Assignee:
              yasuhiro.matsuda Yasuhiro Matsuda
              Reporter:
              yasuhiro.matsuda Yasuhiro Matsuda
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              • Created:
                Updated:
                Resolved: