Java Producer Callback

This video tutorial explains how to implement a callback function in a Kafka producer to handle message metadata and exceptions. It covers creating a logger using SLF4J to log metadata details such as topic, partition, offset, and timestamp. The tutorial also demonstrates error handling and running the code to observe the output. Finally, it shows how to use a loop to send multiple records and discusses the distribution of messages across partitions.

What is the primary purpose of introducing a callback in the Producer demo?

• To alter the partition number

• To modify the producer creation process

• To handle message sending and exceptions

• To change the bootstrap servers

What does the onCompletion function in the callback do?

• Executes when a record is sent or an exception occurs

• Changes the producer configuration

• Modifies the offset value

• Alters the partition number

Which object is used to log metadata information in the code?

• RecordMetadata

• Producer

• Callback

• Logger

What information can be logged using the RecordMetadata object?

• Callback execution time

• Topic, partition, offset, and timestamp

• Bootstrap server details

• Producer configuration

What is the observed behavior when messages are sent without keys?

• Messages are distributed randomly across partitions

• Messages are not sent at all

• Messages are sent to a single partition

• Messages are sent in a sequential order

How are messages distributed across partitions when no keys are used?

• To a single partition

• In a round-robin fashion

• Randomly

• Sequentially

What is the impact of not using keys on message distribution?

• Messages are not sent

• Messages are sent to random partitions

• Messages are evenly distributed across all partitions

• Messages are sent to a specific partition