kafka-example | small example of Kafka producer | Stream Processing library

by robsonbittencourt Kotlin Version: Current License: MIT

X-Ray Key Features Code Snippets Community Discussions(4)Vulnerabilities Install Support

kandi X-RAY | kafka-example Summary

kafka-example is a Kotlin library typically used in Data Processing, Stream Processing, Kafka applications. kafka-example has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

A small example of Kafka producer and consumer, based on Allura Apache Kafka Formation

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kafka-example has a low active ecosystem.

It has 2 star(s) with 0 fork(s). There are 1 watchers for this library.

It had no major release in the last 6 months.

kafka-example has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of kafka-example is current.

Quality

kafka-example has 0 bugs and 0 code smells.

Security

kafka-example has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

kafka-example code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

kafka-example is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

kafka-example releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

It has 122 lines of code, 9 functions and 9 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

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kafka-example Examples and Code Snippets

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Community Discussions

Trending Discussions on kafka-example

Setting up Kafka Connect, cannot rename group ID

Flink table exception : Window aggregate can only be defined over a time attribute column, but TIMESTAMP(6) encountered

How do I Restart a shutdown embeddedKafkaServer in a Spring Unit Test?

kafka flink connection error shows NoSuchMethodError

QUESTION

Setting up Kafka Connect, cannot rename group ID

Asked 2021-Dec-04 at 15:29

I am using this Github repo and folder path I found: https://github.com/entechlog/kafka-examples/tree/master/kafka-connect-standalone

The issue I am having is that, as a matter of access control, I must specify my group ID by adding a prefix to it, let's call it abc-. When I build this Docker image, I check my logs and I can see that the group ID ends up being connect-bq-sink-connector, which I am assuming is a concatenation of the word connect- along with the variable CONNECTOR_NAME seen in the docker-compose file. When I change the connector name variable, my group ID also changes (but the connect- prefix always remains). You will also see a variable called CONNECT_GROUP_ID in the docker-compose file. This variable appears to have absolutely no effect on the Kafka connect instance. The Docker logs give this (in this order):

WARN The configuration 'group.id' was supplied but isn't a known config. (org.apache.kafka.clients.admin.AdminClientConfig:380)

and then later...

...

group.id = connect-bq-sink-connector

The final error, which is mostly unimportant as I know it is due to lack of permissions, is simply:

...

ANSWER

Answered 2021-Dec-04 at 04:02

If you want to change connect group id, add environment variable name CONNECTOR_ properties section under the service kafka-connect and set a value you want.

The github example starting steps as follows.

In file docker/Dockerfile, a startup command is /etc/confluent/docker/run and you cant find the file in docker/include/etc/confluent/docker.
Start a container with simple step configure and launch in the docker/include/etc/confluent/docker/run file.
In file docker/include/etc/confluent/docker/configure, Check mandatory environment variables such as CONNECT_BOOTSTRAP_SERVERS, CONNECT_KEY_CONVERTER, CONNECT_VALUE_CONVERTER... are set, and call templating function with kafka-connect-standalone.properties.template and kafka-connect.properties.template.

So if there is a configuration that you want to add to the kafka-connect-standalone.properties file, you must specify an environment variable starting with CONNECTOR_.

You can find all configuration for kafka connect in the following link.

https://kafka.apache.org/documentation/#connectconfigs

Source https://stackoverflow.com/questions/70222296

QUESTION

Flink table exception : Window aggregate can only be defined over a time attribute column, but TIMESTAMP(6) encountered

Asked 2021-Feb-16 at 10:47

I am using flink 1.12.0. Trying to convert a data stream into a table A and running the sql query on the tableA to aggregate over a window as below.I am using f2 column as its a timestamp data type field .

...

ANSWER

Answered 2021-Feb-16 at 10:47

In order to do using the table API to perform event-time windowing on your datastream, you'll need to first assign timestamps and watermarks. You should do this before calling fromDataStream.

With Kafka, it's generally best to call assignTimestampsAndWatermarks directly on the FlinkKafkaConsumer. See the watermark docs, kafka connector docs, and Flink SQL docs for more info.

Source https://stackoverflow.com/questions/66204166

QUESTION

How do I Restart a shutdown embeddedKafkaServer in a Spring Unit Test?

Asked 2020-Oct-08 at 02:56

I have a Spring-boot Unit Test that is testing Switch Back capabilities of my application when the primary Kafka Cluster comes online.

The application successfully switches to secondary when the primary goes offline. Now we're adding the ability to switch back to primary on a timer instead of failure.

My Test Method Looks like so:

...

ANSWER

Answered 2020-Oct-05 at 17:02

It wasn't really designed for this use case, but the following works, as long as you don't need to retain data between the broker instances...

Source https://stackoverflow.com/questions/64145670

QUESTION

kafka flink connection error shows NoSuchMethodError

Asked 2020-Jan-23 at 12:14

new error appeared when i change from flinkkafkaconsumer09 to flinkkafkaconsumer Flink code:

...

ANSWER

Answered 2020-Jan-23 at 10:55

flink-connector-kafka_2.12 isn't compatible with FlinkKafkaConsumer09.

flink-connector-kafka_2.12 is a "universal" kafka connector, compiled for use with Scala 2.12. This universal connector can be used with any version of Kafka from 0.11.0 onward.

FlinkKafkaConsumer09 is for use with Kafka 0.9.x. If your Kafka broker is running Kafka 0.9.x, then you will need flink-connector-kafka-0.9_2.11 or flink-connector-kafka-0.9_2.12, depending on which version of Scala you want.

On the other hand, if your Kafka broker is running a recent version of Kafka (0.11.0 or newer), then stick with flink-connector-kafka_2.12 and use FlinkKafkaConsumer instead of FlinkKafkaConsumer09.

See the documentation for more info.

Source https://stackoverflow.com/questions/59875757

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

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