[Solved] Identify the error in this Kafka Streams punctuator scheduling code: context.schedule(5000, PunctuationType.WALL_CLOCK_TIME, timestamp -> { System.out.println("Triggered"); }); | Kafka

Kafka - Advanced Stream Processing

Identify the error in this Kafka Streams punctuator scheduling code:

context.schedule(5000, PunctuationType.WALL_CLOCK_TIME, timestamp -> {
    System.out.println("Triggered");
});

Acontext.schedule cannot be called inside a processor

BPunctuationType should be STREAM_TIME, not WALL_CLOCK_TIME

CCallback function must return a value

DDuration object is missing; integer milliseconds used instead

Step-by-Step Solution

Solution:

Step 1: Check the schedule method parameters
The schedule method expects a Duration object, not an integer.
Step 2: Identify the incorrect argument type
Passing 5000 as int instead of Duration.ofMillis(5000) causes a syntax error.
Final Answer:
Duration object is missing; integer milliseconds used instead -> Option D
Quick Check:
Use Duration, not int, for schedule interval [OK]

Quick Trick: Always use Duration.ofMillis or similar, not raw integers [OK]

Common Mistakes:

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