org.apache.drill.exec.store.kafka

Class MessageIterator

java.lang.Object

org.apache.drill.exec.store.kafka.MessageIterator

All Implemented Interfaces:

AutoCloseable, Iterator<org.apache.kafka.clients.consumer.ConsumerRecord<byte[],byte[]>>

public class MessageIterator
extends Object
implements Iterator<org.apache.kafka.clients.consumer.ConsumerRecord<byte[],byte[]>>, AutoCloseable

Constructor Summary

Constructors

Constructor and Description
MessageIterator(org.apache.kafka.clients.consumer.KafkaConsumer<byte[],byte[]> kafkaConsumer, KafkaPartitionScanSpec subScanSpec, long kafkaPollTimeOut)

Method Summary

Modifier and Type	Method and Description
void	close()
long	getTotalFetchTime() Returns total fetch time of the messages from topic.
boolean	hasNext()
org.apache.kafka.clients.consumer.ConsumerRecord<byte[],byte[]>	next()
void	remove()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Detail

MessageIterator

public MessageIterator(org.apache.kafka.clients.consumer.KafkaConsumer<byte[],byte[]> kafkaConsumer,
                       KafkaPartitionScanSpec subScanSpec,
                       long kafkaPollTimeOut)

Method Detail

remove

public void remove()

Specified by:

remove in interface Iterator<org.apache.kafka.clients.consumer.ConsumerRecord<byte[],byte[]>>

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<org.apache.kafka.clients.consumer.ConsumerRecord<byte[],byte[]>>

getTotalFetchTime

public long getTotalFetchTime()

Returns total fetch time of the messages from topic. Only applicable if debug log level is enabled.

Returns:

calculated total fetch time if debug log level is enabled, 0 otherwise

next

public org.apache.kafka.clients.consumer.ConsumerRecord<byte[],byte[]> next()

Specified by:

next in interface Iterator<org.apache.kafka.clients.consumer.ConsumerRecord<byte[],byte[]>>

close

public void close()

Specified by:

close in interface AutoCloseable