Why is it important to call initTransactions() before starting any transactional operations in Kafka?

hard🧠 Conceptual Q10 of Q15

Kafka - Message Delivery Semantics

Why is it important to call initTransactions() before starting any transactional operations in Kafka?

AIt sends all buffered messages immediately to Kafka brokers.

BIt registers the producer with the transaction coordinator and recovers any unfinished transactions.

CIt disables idempotence to allow transactions.

DIt closes the producer to prevent further sends.

Step-by-Step Solution

Solution:

Step 1: Role of initTransactions()
This method registers the producer with Kafka's transaction coordinator and recovers any incomplete transactions from previous sessions.
Step 2: Eliminate incorrect options
It does not send buffered messages, disable idempotence, or close the producer.
Final Answer:
It registers the producer with the transaction coordinator and recovers any unfinished transactions. -> Option B
Quick Check:
initTransactions() registers and recovers transactions [OK]

Quick Trick: initTransactions() registers producer and recovers transactions [OK]

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