The producer code below features a 'Callback' class with a method called 'onCompletion()'. When will the 'onCompletion()' method be invoked?

The correct answer is D. When the producer receives the acknowledgment from the broker. The onCompletion() method of the Callback is invoked when the producer receives the acknowledgment from the broker, indicating that the message has been successfully written or an error has occurred.

Developing Kafka Producers

Question

Exhibit

Options

AWhen a consumer sends an acknowledgement to the producer
BWhen the producer puts the message into its socket buffer
CWhen the producer batches the message
DWhen the producer receives the acknowledgment from the broker

How the community answered

(41 responses)

A
7% (3)
B
2% (1)
C
2% (1)
D
88% (36)

Explanation

The onCompletion() method of the Callback is invoked when the producer receives the acknowledgment from the broker, indicating that the message has been successfully written or an error has occurred.

Topics

#Callback#onCompletion#broker acknowledgment#async producer

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