kafka-streams-examples | Demo applications and code examples | Pub Sub library

by confluentinc Java Version: v7.0.10-95 License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(6)Vulnerabilities Install Support

kandi X-RAY | kafka-streams-examples Summary

kafka-streams-examples is a Java library typically used in Telecommunications, Media, Media, Entertainment, Messaging, Pub Sub, Kafka applications. kafka-streams-examples has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has medium support. You can download it from GitHub.

This project contains code examples that demonstrate how to implement real-time applications and event-driven microservices using the Streams API of Apache Kafka aka Kafka Streams. For more information take a look at the latest Confluent documentation on the Kafka Streams API, notably the Developer Guide.

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Support

kafka-streams-examples has a medium active ecosystem.

It has 2166 star(s) with 1100 fork(s). There are 382 watchers for this library.

It had no major release in the last 6 months.

There are 11 open issues and 104 have been closed. On average issues are closed in 667 days. There are 9 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of kafka-streams-examples is v7.0.10-95

Quality

kafka-streams-examples has 0 bugs and 0 code smells.

Security

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

kafka-streams-examples code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

kafka-streams-examples is licensed under the Apache-2.0 License. This license is Permissive.

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

Reuse

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

Build file is available. You can build the component from source.

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

It has 12045 lines of code, 669 functions and 142 files.

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

Top functions reviewed by kandi - BETA

kandi has reviewed kafka-streams-examples and discovered the below as its top functions. This is intended to give you an instant insight into kafka-streams-examples implemented functionality, and help decide if they suit your requirements.

The main entry point
Build payment producer
Compares this Order
Main entry point for testing
Starts the given Kafka streams synchronously
Build Kafka streams
The main method
Defines the Stream Countology for each word
Gets the streams configuration
Compares two KeyValueBean
Compares this object for equality
Get the single song
Compares two songs
Compares if the specified object is equal to or not
Retrieve the post validation of an order
Query for key - value pairs within a window
Main entry point for Avro streams
Get a long - poll for the specified key
Returns a key - value pair
Creates a hashCode for the item
Serialize priority queue to byte array
Deserialize a priority queue
Main entry point
Main command line entry point
Entry point for streaming streams
Entry point for testing

Get all kandi verified functions for this library.

kafka-streams-examples Key Features

No Key Features are available at this moment for kafka-streams-examples.

kafka-streams-examples Examples and Code Snippets

No Code Snippets are available at this moment for kafka-streams-examples.

Community Discussions

Trending Discussions on kafka-streams-examples

kafka issue while connecting to zookeeper (kubernetes-kafka:1.0-10.2.1)

kafka connect to Google BigQuery throws error java.lang.NoClassDefFoundError: org/apache/kafka/common/config/ConfigDef$CaseInsensitiveValidString

Kafka stream: Monthly time windows

kafka.zookeeper.ZooKeeperClientTimeoutException: Timed out waiting for connection while in state: CONNECTING

kafka-streams: retry complete message join if single element is missing

Cannot run Kafka on mac

QUESTION

kafka issue while connecting to zookeeper (kubernetes-kafka:1.0-10.2.1)

Asked 2021-Oct-19 at 09:03

I have used this document for creating kafka https://kow3ns.github.io/kubernetes-kafka/manifests/

able to create zookeeper, facing issue with the creation of kafka.getting error to connect with the zookeeper.

this is the manifest i have used for creating for kafka:

https://kow3ns.github.io/kubernetes-kafka/manifests/kafka.yaml for Zookeeper

https://github.com/kow3ns/kubernetes-zookeeper/blob/master/manifests/zookeeper.yaml

The logs of the kafka

...

ANSWER

Answered 2021-Oct-19 at 09:03

Your Kafka and Zookeeper deployments are running in the kaf namespace according to your screenshots, presumably you have set this up manually and applied the configurations while in that namespace? Neither the Kafka or Zookeeper YAML files explicitly state a namespace in metadata, so will be deployed to the active namespace when created.

Anyway, the Kafka deployment YAML you have is hardcoded to assume Zookeeper is setup in the default namespace, with the following line:

Source https://stackoverflow.com/questions/69625797

QUESTION

kafka connect to Google BigQuery throws error java.lang.NoClassDefFoundError: org/apache/kafka/common/config/ConfigDef$CaseInsensitiveValidString

Asked 2021-Mar-14 at 19:40

I am trying to stream from a Kafka topic to Google BigQuery. My connect-standalone.properties file is as follows:

...

ANSWER

Answered 2021-Mar-14 at 19:40

Thanks all.

I was using an older Kafka version.

I upgraded Kafka in the cluster from kafka_2.12-1.1.0 to the latest stable version kafka_2.12-2.7.0. I also upgraded zookeeper from zookeeper-3.4.6 to apache-zookeeper-3.6.2-bin version.

In addition in the run file I added the following:

Source https://stackoverflow.com/questions/66617141

QUESTION

Kafka stream: Monthly time windows

Asked 2020-Dec-09 at 09:37

Based on this example (https://github.com/confluentinc/kafka-streams-examples/blob/5.5.0-post/src/test/java/io/confluent/examples/streams/window/DailyTimeWindows.java), I would like to create a Monthly time windows. The problem is the size method which I don't know the size since every month have a different size.

For more context, I want to count each unique user who made a transaction over a month based on userId.

Actual implementation for windowsFor method:

...

ANSWER

Answered 2020-Dec-08 at 18:25

The problem is the size method which I don't know the size since every month have a different size.

You can convert months to days and then add it. You will also need to take care of checking leap year.

Source https://stackoverflow.com/questions/65202905

QUESTION

kafka.zookeeper.ZooKeeperClientTimeoutException: Timed out waiting for connection while in state: CONNECTING

Asked 2020-Sep-25 at 10:41

I am trying to install kafka in ubuntu. I have downloaded the kafka tar.gz file,unzipped it. started the zookeeper server .While trying to start the kafka server, getting the timeout exception.

Can some one pls let me know the resolution.

Following are the server logs: ...

ANSWER

Answered 2020-Sep-25 at 10:41

Many Zookeeper instances were running earlier. I killed all the zookeeper and Brokers , restarted them again freshly . It is working fine now.

Source https://stackoverflow.com/questions/63933799

QUESTION

kafka-streams: retry complete message join if single element is missing

Asked 2020-Jul-23 at 09:45

I'm performing a message enrichement through a KStream-KTable left join using the kafka-streams DSL. Everything worked smoothly except for a subtle problem.

In the current architecture we receive in a topic (placements, the KStream) some messages that needs to be enriched with the data from a compacted topic (descriptions, the KTable). The messages are something like:

...

ANSWER

Answered 2020-Jul-23 at 09:45

After careful analysis of the custom join example, the solution is to slightly change its logic.

Below an excerpt from the example:

Source https://stackoverflow.com/questions/63031120

QUESTION

Cannot run Kafka on mac

Asked 2020-Feb-25 at 11:37

I am very new to using Microservices and having trouble running Kafka after I have started zookeeper.

Zookeeper starts fine but when I try to start my Kafka server it throws an error.

I have searched on google to try and solve my problem but its quite overwhelming, as I am not sure what all these different config files mean/do.

I have tried by enabling listeners=PLAINTEXT://:9092 in server settings but it doesn't work.

I have also tried to un and reinstalled Kafka and ZooKeeper but I still get the same error.

...

ANSWER

Answered 2020-Feb-25 at 11:37

The cause of the problem is shown in this message:

kafka.common.InconsistentClusterIdException:

The Cluster ID S4SZ31nVRTCQ4uwRJ9_7mg

doesn't match stored clusterId Some(Y_mQi4q4TSuhlWdx4DHiaQ)

in meta.properties.

The broker is trying to join the wrong cluster.
Configured zookeeper.connect may be wrong.

The above problem occurs when a new instance of Kafka is being started up on data storage created by another kafka server. Kafka stores its messages in 'log' files.

How to fix the problem?

The problem can be fixed in these steps:

Shutdown both Kafka and Zookeeper
If required, take backup of the existing logs of Kafka and Zookeeper
Delete the log directories of both Kafka and Zookeeper
Restart Zookeeper and Kafka

Source https://stackoverflow.com/questions/60391921

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

Vulnerabilities

No vulnerabilities reported

Install kafka-streams-examples

You can download it from GitHub.
You can use kafka-streams-examples like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the kafka-streams-examples component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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