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You started Kafka Connect in standalone mode but connectors are not running. What is a likely cause?

medium📝 Debug Q6 of Q15
Kafka - Connect
You started Kafka Connect in standalone mode but connectors are not running. What is a likely cause?
ADistributed mode was accidentally started.
BZooKeeper is not running for coordination.
CMultiple worker nodes are conflicting.
DThe connector configuration file was not provided or is empty.
Step-by-Step Solution
Solution:

  1. Step 1: Check standalone mode requirements

    Standalone mode requires connector config files to run connectors.

  2. Step 2: Identify common errors

    Missing or empty connector config causes connectors not to start.

  3. Final Answer:

    The connector configuration file was not provided or is empty. -> Option D

  4. Quick Check:

    Standalone mode needs connector configs [OK]
Quick Trick: Standalone mode needs connector config file [OK]
Common Mistakes:
MISTAKES
  • Blaming ZooKeeper in standalone mode
  • Assuming multiple workers cause conflict in standalone
  • Confusing mode started

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