org.apache.kafka.clients.consumer

Interface OffsetCommitCallback

public interface OffsetCommitCallback

A callback interface that the user can implement to trigger custom actions when a commit request completes. The callback may be executed in any thread calling poll().

Method Summary

Modifier and Type	Method and Description
void	onComplete(Map<TopicPartition,OffsetAndMetadata> offsets, Exception exception) A callback method the user can implement to provide asynchronous handling of commit request completion.

Method Detail

onComplete

void onComplete(Map<TopicPartition,OffsetAndMetadata> offsets,
                Exception exception)

A callback method the user can implement to provide asynchronous handling of commit request completion. This method will be called when the commit request sent to the server has been acknowledged.

Parameters:

offsets - A map of the offsets and associated metadata that this callback applies to

exception - The exception thrown during processing of the request, or null if the commit completed successfully

Throws:

CommitFailedException - if the commit failed and cannot be retried. This can only occur if you are using automatic group management with KafkaConsumer.subscribe(Collection), or if there is an active group with the same groupId which is using group management.

RebalanceInProgressException - if the commit failed because it is in the middle of a rebalance. In such cases commit could be retried after the rebalance is completed with the KafkaConsumer.poll(Duration) call.

WakeupException - if KafkaConsumer.wakeup() is called before or while this function is called

InterruptException - if the calling thread is interrupted before or while this function is called

AuthorizationException - if not authorized to the topic or to the configured groupId. See the exception for more details

KafkaException - for any other unrecoverable errors (e.g. if offset metadata is too large or if the committed offset is invalid).