Package org.apache.kafka.clients.consumer

Class LogTruncationException

java.lang.Object

java.lang.Throwable

java.lang.Exception

java.lang.RuntimeException

org.apache.kafka.common.KafkaException

org.apache.kafka.clients.consumer.InvalidOffsetException

org.apache.kafka.clients.consumer.OffsetOutOfRangeException

org.apache.kafka.clients.consumer.LogTruncationException

All Implemented Interfaces:

Serializable

public class LogTruncationException
extends OffsetOutOfRangeException

In the event of an unclean leader election, the log will be truncated, previously committed data will be lost, and new data will be written over these offsets. When this happens, the consumer will detect the truncation and raise this exception (if no automatic reset policy has been defined) with the first offset known to diverge from what the consumer previously read.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
LogTruncationException(String message, Map<TopicPartition,Long> fetchOffsets, Map<TopicPartition,OffsetAndMetadata> divergentOffsets)

Method Summary

Modifier and Type	Method	Description
Map<TopicPartition,OffsetAndMetadata>	divergentOffsets()	Get the divergent offsets for the partitions which were truncated.

Methods inherited from class org.apache.kafka.clients.consumer.OffsetOutOfRangeException

offsetOutOfRangePartitions, partitions

Methods inherited from class java.lang.Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

LogTruncationException

public LogTruncationException(String message,
 Map<TopicPartition,Long> fetchOffsets,
 Map<TopicPartition,OffsetAndMetadata> divergentOffsets)

Method Details

divergentOffsets

public Map<TopicPartition,OffsetAndMetadata> divergentOffsets()

Get the divergent offsets for the partitions which were truncated. For each partition, this is the first offset which is known to diverge from what the consumer read. Note that there is no guarantee that this offset will be known. It is necessary to use OffsetOutOfRangeException.partitions() to see the set of partitions that were truncated and then check for the presence of a divergent offset in this map.