Apache Kafka - Real-time Stream Processing (Master Class) - Stream Time and Grace Period

The video tutorial covers the concepts of grace period and stream time in Kafka Streams. It explains how to handle late arrivals using tumbling windows and continuous updates. The tutorial demonstrates the implementation of a grace period to manage latecomers effectively. It also distinguishes between stream time and wall clock time, emphasizing the importance of stream time in processing records. The default grace period is 24 hours, but it can be adjusted to close older windows as needed.

In what scenarios might late arriving records be considered irrelevant?

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What happens to the window count if a late record arrives after the grace period?

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Summarize the key differences between stream time and wall clock time as discussed in the lecture.

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