AlexCSalinas opened a new pull request, #21414:
URL: https://github.com/apache/kafka/pull/21414
## Summary
Clarifies how stream time works in the Kafka Streams docs:
- Stream time is implemented **per task** ("task time") based on input
records for that task; there is no global stream time.
- Task time is preserved across rebalances and application restarts.
- Some DSL operators that use grace periods maintain their own in-memory
stream time ("operator time"), which is not preserved across
rebalances/restarts and is re-established from the first input record after
restart.
- Documents that this distinction affects how grace periods are applied.
## References
- KAFKA-20099
- KAFKA-9368 (related)
## License
This contribution is my original work and I license it under the project's
open source license.
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