zkclient | effective Java client for zookeeper | Messaging library
kandi X-RAY | zkclient Summary
kandi X-RAY | zkclient Summary
zkclient - A simple and effective Java client for zookeeper (both support zookeeper 3.3.x/3.4.x+)
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Top functions reviewed by kandi - BETA
- Process a Watched event
- Handle state changes
- Fires data changed events
- Fires a child changed event
- Closes the server
- Waits until a server is down
- Close the client
- Closes the zookeeper connection
- Count the number of children
- Retries the callable and returns the result
- Blocks until the ZooKeeper state has changed
- Creates a new ZK exception
- Subscribe a child listener for the given path
- Watch for children with the given path
- Connects to zookeeper
- Connect to ZooKeeper
- Returns the number of listeners
- Returns the creation time of the node
- Caps cas data
- Waits until the given path exists
- Start startup
- Joins the current thread
- Subscribe data changes for a path
- Starts the event thread
- Returns the localhost name
zkclient Key Features
zkclient Examples and Code Snippets
Community Discussions
Trending Discussions on zkclient
QUESTION
When I used maven to import the jar package of dubbo-spring-boot-start, the following error occurred:
...ANSWER
Answered 2021-Dec-19 at 18:34Delete the .m2 folder then try again, I just experienced this.
QUESTION
I am trying to change the logging level in Kafka server, because the logs are too verbose. I have looked at which classes log at the DEBUG level and got log line counts e.g.:
...ANSWER
Answered 2021-Nov-15 at 18:44Looking at which JARs are in the classpath, I concluded that our installation of Kafka (plus some custom code which probably brought in dependencies) was actually logging through logback. Found these JARs in the classpath:
QUESTION
I'm using docker with kafka and clickhouse. I want to connect 'KsqlDB table' and 'clickhouse' using 'kafka connect'. So I referred to this document and modified 'docker composite'.
here is my docker-compose
...ANSWER
Answered 2021-Nov-04 at 01:31It was solved when 'httpcomponents-client-4.5.13' was downloaded through wget. I think 'httpclient' was needed in 'clickhouse-jdbc'. I'm using clickhouse-jdbc-v0.2.6
QUESTION
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 09:03Your 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:
QUESTION
I am pretty new to the world of docker. I have been using Docker for windows which uses the WSL2 engine. Docker commands seemed to work all fine before but I started to have some issues with my Linux distribution which led to me uninstall and reinstall my linux distribution and Docker Desktop. After the reinstallation docker-compose up -d refuses to work in detached mode(i.e I can use ctrl + C to cancel it) .
Below is my docker-compose.yml file
...ANSWER
Answered 2021-Sep-25 at 11:48there was an issue with the bash command stringifying and the elasticsearch service indentation. if you have any more issues you can use this YAML formatter
fixed compose file:
QUESTION
Here's the docker-compose file I am using for kafka and ksqldb setup,
...ANSWER
Answered 2021-Aug-12 at 15:24Docker volumes are ephemeral, so this is expected behavior.
You need to mount host volumes for at least the Kafka and Zookeeper containers
e.g.
QUESTION
I am trying to do event streaming between mysql and elasticsearch, one of the issue I faced was with the JSON object in mysql when transfered to elasticsearch was in JSON string format not as an object.
I was looking for a solution using SMT, I found this,
I don't know how to install or load in my kafka or connect container
Here's my docker-compose file,
...ANSWER
Answered 2021-Jun-27 at 20:19to install SMT it just the same as installing other connector,
Copy your custom SMT JAR file (and any non-Kafka JAR files required by the transformation) into a directory that is under one of the directories listed in the plugin.path property in the Connect worker configuration –
In your case copy to /usr/share/confluent-hub-components
QUESTION
I have a Kafka cluster that I'm managing with Docker.
I have a container where I'm running the broker and another one where I run the pyspark program which is supposed to connect to the kafka topic inside the broker container.
If I run the pyspark script in my local laptop everything runs perfectly but if I try to run the same code from inside the pyspark container I get the following error:
...ANSWER
Answered 2021-Mar-21 at 09:38There are several problems in your setup:
- You don't add the package for Kafka support as described in docs. It's either needs to be added when starting
pyspark, or when initializing session, something like this (change3.0.1to version that is used in your jupyter container):
QUESTION
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 19:40Thanks 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:
QUESTION
I'm currently trying to implement a debezium connector. I've used JDBC connector as introduction but I need log-based CDC. I'm using a docker-compose.yml file to establish all configuration and the database is based on Oracle.
I'm stuck because I'm getting this error "ERROR io.confluent.admin.utils.ClusterStatus - Expected 1 brokers but found only 0. Brokers found []."
Here is my docker-compose file:
Is there a simpler way to build this docker-compose?
...ANSWER
Answered 2021-Jan-13 at 20:41Here's a working Docker Compose which uses the Debezium Oracle connector.
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No vulnerabilities reported
Install zkclient
You can use zkclient 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 zkclient 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 .
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