[Solved] Given the following code snippet in a Kafka Streams processor: context.schedule(Duration.ofMinutes(1), PunctuationType.... What will be printed when the punctuator triggers? | Kafka

Kafka - Advanced Stream Processing

Given the following code snippet in a Kafka Streams processor:

context.schedule(Duration.ofMinutes(1), PunctuationType.STREAM_TIME, timestamp -> {
    System.out.println("Punctuator triggered at " + timestamp);
});

What will be printed when the punctuator triggers?

APunctuator triggered at current system time in milliseconds

BPunctuator triggered at the stream time (event time) in milliseconds

CPunctuator triggered at a fixed string 'timestamp'

DNo output because punctuator is not scheduled correctly

Step-by-Step Solution

Solution:

Step 1: Identify the PunctuationType used
The code uses PunctuationType.STREAM_TIME, which triggers based on event time in the stream.
Step 2: Understand the timestamp parameter
The timestamp passed is the stream time in milliseconds, not system time.
Final Answer:
Punctuator triggered at the stream time (event time) in milliseconds -> Option B
Quick Check:
PunctuationType.STREAM_TIME = stream event time [OK]

Quick Trick: STREAM_TIME triggers use event time, not system clock [OK]

Common Mistakes:

MISTAKES

Confusing STREAM_TIME with WALL_CLOCK_TIME
Expecting system time instead of stream time
Assuming no output due to scheduling

Master "Advanced Stream Processing" in Kafka

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Time

More Kafka Quizzes

Given the following code snippet in a Kafka Streams processor:

Step 1: Identify the PunctuationType used

Step 2: Understand the timestamp parameter

Final Answer:

Quick Check:

Want More Practice?