hard20 pts · first answer countskafkakafka-streams

Emitting on a timer with no traffic

A Processor API app must flush a buffer every 30 seconds even when no new records arrive. Which punctuation type does that?

A.STREAM_TIME, because it follows record timestampsB.A punctuator is not needed; process() runs on a timerC.A session window with a 30-second gapD.WALL_CLOCK_TIME, which fires on the system clock

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Emitting on a timer with no traffic

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