How to list all the messages from producer in consumer from beginning in kafka (Windows)?
Not able to display message from producer from beginning in kafka-windows
Console producer does not read data. Use the consumer instead
Try this command in windows powershell:
.\bin\windows\kafka-console-consumer.bat --bootstrap-server localhost:9092 --topic cities --from-beginning
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I use kafka which version is kafka V0.11.
I have a consumer group which group.id = test, but when I use command like kafka-consumer-groups --bootstrap-server localhost:9092 --group test --describe, I find no consumer under this group.
however, service consume is normal.
Who could know why? thx.
I am running Kafka in windows.
I am creating a Kafka console producer with below command
C:\kafka_2.11-2.4.0\bin\windows>kafka-console-producer.bat --broker-list localhost:9092 --topic input-topic
and creating kafka console consumer with below command
C:\kafka_2.11-2.4.0\bin\windows>kafka-console-consumer.bat --bootstrap-server localhost:9092 --topic input-topic
the problem is i am getting the messages continuously. yesterday it was showing only the messages which i am typing to the console producer.
how to stop auto sending messages?
I need to send the messages if I am typing otherwise it should not send blank messages.
By default, console consumer only gets latest offsets of the topic (only new messages)
If you want to read existing data, you must add --from-beginning
If you want to preserve offsets between runs, you need a --group
I have kafka topics, server name,port, and also brokers list.
How can i see the data from consumer with these details..
Try running this from your kafka directory:
bin/kafka-console-consumer.sh --bootstrap-server <BROKER_IP>:<PORT> --topic <TOPIC_NAME> --from-beginning
It's the quickest way to test consuming from a topic.
I am playing aroung Kafka, when I use
bin/kafka-console-consumer.sh --zookeeper localhost:2181 --from-beginning --topic test
Kafka will automatically create a consumer group. I am wondering how to get the consumer group name?
You should use kafka-consumer-groups.sh. The following command will list you all consumer groups.
bin/kafka-consumer-groups.sh --list --bootstrap-server localhost:9092
Note: This will only show information about consumers that use the Java Consumer API (non-Zookeeper-based consumers).
I have installed Apache Kafka to a Windows system and have tried a console Producer-Consumer example. In case I add new consumers to the topic, only the messages after adding the consumer are printed to the console. Is there any way to get all the messages of the particular topic?
You need to add --from-beginning flag to your console consumer command to get all messages.
Example command:
bin/kafka-console-consumer.sh --zookeeper localhost:2181 --topic test --from-beginning