[Solved] Given this Kafka Streams code snippet, what happens when a bad record causes an exception? streams.foreach((key, value) -> { try { process(value); } catch (Exception e) { deadLetterTopic.... | Kafka

Kafka - Advanced Stream Processing

Given this Kafka Streams code snippet, what happens when a bad record causes an exception?

streams.foreach((key, value) -> {
  try {
    process(value);
  } catch (Exception e) {
    deadLetterTopic.send(key, value);
  }
});

AThe exception crashes the whole application

BThe stream stops processing immediately

CThe bad record is ignored and lost

DThe bad record is sent to a dead-letter topic for later review

Step-by-Step Solution

Solution:

Step 1: Analyze try-catch block in code
The code tries to process each record; if an exception occurs, it catches it.
Step 2: Check catch block action
In catch, the bad record is sent to deadLetterTopic for later review.
Final Answer:
The bad record is sent to a dead-letter topic for later review -> Option D
Quick Check:
Exception caught = send to dead-letter topic [OK]

Quick Trick: Catch exceptions and send bad data to dead-letter topic [OK]

Common Mistakes:

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Given this Kafka Streams code snippet, what happens when a bad record causes an exception?