How producer and consumer identify the leader in Kafka

[#1]

Hi,

How producer and consumer identify the leader in Kafka.

Thank you.

[#2]

via zookeeper query or bootstraping. the information is stored in zookeeper per topic.

[#3]

@Harald Berghoff

Thank you for the reply.

How to check this in zookeeper.

[#4]

@Nilesh within the zookeeper the leader is given at this path:

/brokers/topics/<<topicname>>

at this path a value named 'partitions' is available, providing key value pairs of

<<partition id>> : <<broker id (of leader)>>

To identify the connection parameter for the broker id, check at the path

/brokers/ids/<<broker id>

the attributes "host", "port" and "endpoints", where endpoints is a multivalue and can contain more than one endpoint.

[#5]

Since Kafka version 0.9, Producers and consumers fetch all metadata details from Kafka brokers directly and Kafka brokers are in sync with Zookeeper. Each Kafka brokers have information about leader.