I have 3 kafka brokers, with 3 partitions :
broker.id 1001: 10.18.0.73:9092 LEADER
broker.id 1002: 10.18.0.73:9093
broker.id 1005: 10.18.0.73:9094
Zookeeper set with 127.0.0.1:2181
Launch with:
1001 -> .\kafka-server-start.bat ..\..\config\server.properties
1002 -> .\kafka-server-start.bat ..\..\config\server1.properties
1005 -> .\kafka-server-start.bat ..\..\config\server2.properties
This is server.properties
broker.id=-1
listeners=PLAINTEXT://10.18.0.73:9092
advertised.listeners=PLAINTEXT://10.18.0.73:9092
num.network.threads=3
num.io.threads=8
socket.send.buffer.bytes=102400
socket.receive.buffer.bytes=102400
socket.request.max.bytes=104857600
log.dirs=/tmp/kafka-logs
num.partitions=1
num.recovery.threads.per.data.dir=1
offsets.topic.replication.factor=1
transaction.state.log.replication.factor=1
transaction.state.log.min.isr=1
log.retention.hours=168
log.segment.bytes=1073741824
log.retention.check.interval.ms=300000
zookeeper.connect=10.18.0.73:2181
zookeeper.connection.timeout.ms=6000
group.initial.rebalance.delay.ms=0
advertised.port=9092
advertised.host.name=10.18.0.73
port=9092
This is server1.properties
broker.id=-1
listeners=PLAINTEXT://10.18.0.73:9093
advertised.listeners=PLAINTEXT://10.18.0.73:9093
num.network.threads=3
num.io.threads=8
socket.send.buffer.bytes=102400
socket.receive.buffer.bytes=102400
socket.request.max.bytes=104857600
log.dirs=/tmp/kafka-logs4
num.partitions=1
num.recovery.threads.per.data.dir=1
offsets.topic.replication.factor=1
transaction.state.log.replication.factor=1
transaction.state.log.min.isr=1
log.retention.hours=168
log.segment.bytes=1073741824
log.retention.check.interval.ms=300000
zookeeper.connect=localhost:2181
zookeeper.connection.timeout.ms=6000
group.initial.rebalance.delay.ms=0
advertised.port=9093
advertised.host.name=10.18.0.73
port=9093
This is server2.properties
broker.id=-1
listeners=PLAINTEXT://10.18.0.73:9094
advertised.listeners=PLAINTEXT://10.18.0.73:9094
num.network.threads=3
num.io.threads=8
socket.send.buffer.bytes=102400
socket.receive.buffer.bytes=102400
socket.request.max.bytes=104857600
log.dirs=/tmp/kafka-logs2
num.partitions=1
num.recovery.threads.per.data.dir=1
offsets.topic.replication.factor=1
transaction.state.log.replication.factor=1
transaction.state.log.min.isr=1
log.retention.hours=168
log.segment.bytes=1073741824
log.retention.check.interval.ms=300000
zookeeper.connect=localhost:2181
zookeeper.connection.timeout.ms=6000
group.initial.rebalance.delay.ms=0
advertised.port=9094
advertised.host.name=10.18.0.73
port=9094
in folder C:\kafka_2.12-2.4.0\config
Run All
Run Producer
.\kafka-console-producer.bat --broker-list 10.18.0.73:9092,10.18.0.73:9093,10.18.0.73:9094 --topic clinicaleventmanager
Run Consumer
.\kafka-console-consumer.bat --bootstrap-server 10.18.0.73:9092,10.18.0.73:9093,10.18.0.73:9094 --topic clinicaleventmanager
I launch a test message
Receive ok!
Now, i shutdown broker 1001 (the leader)
The new leader is 1002
In the consumer this message appeared for 1 second, I imagine for the time necessary for the election of the new leader
[2020-01-16 15:33:35,802] WARN [Consumer clientId=consumer-console-consumer-56669-1, groupId=console-consumer-56669] Connection to node 2147482646 (/10.18.0.73:9092) could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient)
if I try to send another message, this is not read by the consume
The new leader 1002 does not appear to be sending messages. Why?
If i run 1001 broker.id, works all. Thanks
