Kafka console producer not allowing to write message
I am trying to write some message on topic, but console is not allowing me(producer not waiting for stdin input). I cant see any error log too. Topic is created successfully though. I am using :
bin/kafka-console-producer.sh --broker-list localhost:9092 --topic test.
Zookeeper and kafka server are running fine. I am using Mac. What could be the possible issue. I am following Apache Kafka documentation http://kafka.apache.org/documentation.html#quickstart.
Ops! the same issue happen to my windows 10, kafka-console-producer.bat file is empty,now i m going to download fresh one to replace existing file.
it works after replacing bat file.
Kafka console producer not allowing to write message, I am trying to write some message on topic, but console is not allowing me(producer not waiting for stdin input). I cant see any error log too. Topic is created The producer does not send any message on the specified topic to the Kafka Queue. It kind of hangs at produceAsync Method. we have received a console log something like below once -
You dont seem to have kafka running as yet.
sudo jps should return something like this :
10306 SupportedKafka 17788 Jps
saying kafka is running. Check your
config path (server.properties) to see if there is an exception being thrown during kafka start. Also, Kafka recommends use of the latest Java (1.8) : http://kafka.apache.org/documentation.html#java
Solved: Console producer/consumer not working in kafka 0.1 , Showing results for Console producer/consumer not working in kafka 0.10.2 with kerberos ErrorLoggingCallback: Error when sending message to topic TEST with key: null, value: 4 bytes with error: org.apache.kafka.common.errors. Although, it does not throw any errors, consumer does not print any messages. bin/kafka-console-producer.sh and bin/kafka-console-consumer.sh in the Kafka directory are the tools that help to create a Kafka Producer and Kafka Consumer respectively. We shall start with a basic example to write messages to a Kafka Topic read from the console with the help of Kafka Producer and read the messages from the topic using Kafka
kafka-console-producer.sh file is empty. I faced the same issue. The solution is to replace
kafka-console-producer.sh with a fresh one. This might be an issue that happens only on Mac OS.
Kafka Tutorial: Using Kafka from the command line, If you are not sure what Kafka is, start here “What is Kafka?”. We will use some Kafka command line utilities, to create Kafka topics, send messages via a producer and consume messages from the command line. It start up a terminal window where everything you type is sent to the Kafka topic. The kafka-console-producer is a program included with Kafka that creates messages from command line input (STDIN). However, simply sending lines of text will result in messages with null keys. In order to send messages with both keys and values you must set the parse.key and key.separator properties on the command line when running the producer.
Yes it happened to me too because the file is empty, so i copy pasted the consumer.bat file info into producer.bat and rename the ConsoleConsumer with ConsoleProducer and it worked.
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SetLocal set KAFKA_HEAP_OPTS=-Xmx512M "%~dp0kafka-run-class.bat" kafka.tools.ConsoleProducer %* EndLocal
Sending some messages from the console, bin/kafka-console-producer.sh --broker-list localhost:9092 --topic kafkatest First the number of messages to be sent in a single batch in case they are not being Don't Use Apache Kafka Consumer Groups the Wrong Way! Apache Kafka is great — but if you're going to use it, you have to be very careful not to break things. Here's how you can avoid the pain!
Standard Kafka consumer hangs and does not output messages, Standard Kafka consumer hangs when no security settings provided. The standard Kafka consumer ( kafka-console-consumer.sh ) is unable to receive messages and and <api_key> with an API key able to access the IBM Event Streams deployment. When running the kafka-console-producer.sh command include the ~/kafka-training/lab1 $ ./start-consumer-console.sh Message 4 This is message 2 This is message 1 This is message 3 Message 5 Message 6 Message 7 Notice that the messages are not coming in order. This is because we only have one consumer so it is reading the messages from all 13 partitions.
Quickstart - Apache Kafka, This tutorial assumes you are starting fresh and have no existing Kafka or Run the producer and then type a few messages into the console to send to the server you should now be able to type messages into the producer terminal and see $ bin/kafka-console-producer.sh --broker-list localhost:9092 --topic Hello-Kafka[2016-01-16 13:50:45,931] WARN property topic is not valid (kafka.utils.Verifia-bleProperties) Hello My first message My second message Start Consumer to Receive Messages. Similar to producer, the default consumer properties are specified in config/consumer.proper
Documentation - Apache Kafka, The Consumer API allows an application to subscribe to one or more topics and The Kafka cluster durably persists all published records—whether or not they Run the producer and then type a few messages into the console to send to the Intro Producers / Consumers help to send / receive message to / from Kafka SASL is used to provide authentication and SSL for encryption JAAS config files are used to read kerberos ticket and authenticate as a part of SASL Kafka Version used in this article :0.9.0.2 Console Producers and Consumers Follow the steps given below…