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What is wrong with this error handling approach in Kafka Streams?

medium📝 Debug Q7 of 15
Kafka - Advanced Stream Processing
What is wrong with this error handling approach in Kafka Streams?
stream.mapValues(value -> {
  try {
    return process(value);
  } catch (Exception e) {
    throw new RuntimeException();
  }
});
ATry block is missing
Bprocess() method is undefined
CRe-throwing exception stops the stream
DNo catch block present
Step-by-Step Solution
Solution:
  1. Step 1: Analyze catch block behavior

    Catch block re-throws a RuntimeException, which will stop stream processing.
  2. Step 2: Understand impact of re-throwing exceptions

    Re-throwing without handling causes the stream to fail on error.
  3. Final Answer:

    Re-throwing exception stops the stream -> Option C
  4. Quick Check:

    Re-throw = Stream failure [OK]
Quick Trick: Avoid re-throwing exceptions to keep streams alive [OK]
Common Mistakes:
  • Thinking re-throwing handles errors gracefully
  • Ignoring that stream stops on exceptions
  • Assuming process() is undefined without context

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