[Solved] What does a punctuator do in Kafka Streams when used with time-based triggers? — Ans: It executes a callback function at scheduled time intervals. | Kafka

Kafka - Advanced Stream Processing

What does a punctuator do in Kafka Streams when used with time-based triggers?

AIt pauses the stream processing until manually resumed.

BIt immediately processes all incoming records without delay.

CIt executes a callback function at scheduled time intervals.

DIt deletes all records from the state store at once.

Step-by-Step Solution

Solution:

Step 1: Understand the role of a punctuator
A punctuator is designed to trigger actions at specific time intervals during stream processing.
Step 2: Identify what happens with time-based triggers
When scheduled with time-based triggers, the punctuator runs a callback function repeatedly at those intervals.
Final Answer:
It executes a callback function at scheduled time intervals. -> Option C
Quick Check:
Punctuator function = Executes callback at intervals [OK]

Quick Trick: Punctuators run code repeatedly on a timer [OK]

Common Mistakes:

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What does a punctuator do in Kafka Streams when used with time-based triggers?