kandi X-RAY | netty Summary
kandi X-RAY | netty Summary
Top functions reviewed by kandi - BETA
- Start a client thread
- Send message by short TCP
- Send msg by long TCP
- Start message
- Gets the name
- Start server
- Pull message from server
- Send message to channel
- Receive message from server
- Main entry point
- Called when a channel is closed
- From interface ClientHandler
- Shutdown channel
- Called when an exception occurs
- Run the connector
- Binds the bootstrap
netty Key Features
netty Examples and Code Snippets
Trending Discussions on netty
I have newly installed...
ANSWERAnswered 2021-Jul-28 at 07:22
You are running the project via Java 1.8 and add the
--add-opens option to the runner. However Java 1.8 does not support it.
So, the first option is to use Java 11 to run the project, as Java 11 can recognize this VM option.
Another solution is to find a place where
--add-opens is added and remove it.
Check Run configuration in IntelliJ IDEA (VM options field) and Maven/Gradle configuration files for
argLine (Maven) and
I'm trying to initiate a Springboot project using Open Jdk 15, Springboot 2.6.0, Springfox 3. We are working on a project that replaced Netty as the webserver and used Jetty instead because we do not need a non-blocking environment.
In the code we depend primarily on Reactor API (Flux, Mono), so we can not remove
I replicated the problem that we have in a new project.: https://github.com/jvacaq/spring-fox.
I figured out that these lines in our build.gradle file are the origin of the problem....
ANSWERAnswered 2022-Feb-08 at 12:36
This problem's caused by a bug in Springfox. It's making an assumption about how Spring MVC is set up that doesn't always hold true. Specifically, it's assuming that MVC's path matching will use the Ant-based path matcher and not the PathPattern-based matcher. PathPattern-based matching has been an option for some time now and is the default as of Spring Boot 2.6.
As described in Spring Boot 2.6's release notes, you can restore the configuration that Springfox assumes will be used by setting
ant-path-matcher in your
application.properties file. Note that this will only work if you are not using Spring Boot's Actuator. The Actuator always uses PathPattern-based parsing, irrespective of the configured
matching-strategy. A change to Springfox will be required if you want to use it with the Actuator in Spring Boot 2.6 and later.
Facing below error while starting spark-shell with yarn master. Shell is working with spark local master....
ANSWERAnswered 2022-Mar-23 at 09:29
Adding these properties in spark-env.sh fixed the issue for me.
Currently, google dataproc does not have spark 3.2.0 as an image. The latest available is 3.1.2. I want to use the pandas on pyspark functionality that spark has released with 3.2.0.
I am doing the following steps to use spark 3.2.0
- Created an environment 'pyspark' locally with pyspark 3.2.0 in it
- Exported the environment yaml with
conda env export > environment.yaml
- Created a dataproc cluster with this environment.yaml. The cluster gets created correctly and the environment is available on master and all the workers
- I then change environment variables.
export SPARK_HOME=/opt/conda/miniconda3/envs/pyspark/lib/python3.9/site-packages/pyspark(to point to pyspark 3.2.0),
export SPARK_CONF_DIR=/usr/lib/spark/conf(to use dataproc's config file) and,
export PYSPARK_PYTHON=/opt/conda/miniconda3/envs/pyspark/bin/python(to make the environment packages available)
Now if I try to run the pyspark shell I get:...
ANSWERAnswered 2022-Jan-15 at 07:17
One can achieve this by:
- Create a dataproc cluster with an environment (
your_sample_env) that contains pyspark 3.2 as a package
Problem: for one of my unit-tests, I want to simulate throwing an exception (
io.netty.handler.timeout.TimeoutException) in combination with Mockito. However, Java won't allow this because the exception is package-protected.
Right now I have the following bit of code:...
ANSWERAnswered 2022-Mar-09 at 10:44
io.netty.handler.timeout.TimeoutException itself is public, but its constructors are package-private. You can mock the exception:
I am running a Spring Boot app that uses WebClient for both non-blocking and blocking HTTP requests. After the app has run for some time, all outgoing HTTP requests seem to get stuck.
WebClient is used to send requests to multiple hosts, but as an example, here is how it is initialized and used to send requests to Telegram:
ANSWERAnswered 2021-Dec-20 at 14:25
I would propose to take a look in the RateLimiter direction. Maybe it does not work as expected, depending on the number of requests your application does over time. From the Javadoc for Ratelimiter: "It is important to note that the number of permits requested never affects the throttling of the request itself ... but it affects the throttling of the next request. I.e., if an expensive task arrives at an idle RateLimiter, it will be granted immediately, but it is the next request that will experience extra throttling, thus paying for the cost of the expensive task." Also helpful might be this discussion: github or github
I could imaginge there is some throttling adding up or other effect in the RateLimiter, i would try to play around with it and make sure this thing really works the way you want. Alternatively, consider using Spring @Scheduled to read from your queue. You might want to spice it up using embedded JMS for further goodies (message persistence etc).
It was a project that used to work well in the past, but after updating, the following errors appear....
ANSWERAnswered 2021-Sep-17 at 11:03
Add mavenCentral() in Build Script
I have a ktor app. I works fine when I run it in development mode. I package it in a docker image by copying over what the gradle application plugin provided. That also works fine on my local machine 8 cores. But now the strange part. When I do exactly the same thing on a rented V-Server also running Ubuntu-20.04 like my local system, ktor is incredible slow....
ANSWERAnswered 2021-Aug-31 at 20:52
docker-compose being slow and my program not starting seemed to be due to insufficient(not good enough) input to /dev/urandom. Installing https://github.com/smuellerDD/jitterentropy-rngd resolved the problem.
After upgrading from
spring-boot-parent version 2.5.5 to 2.6.0, I started seeing these error messages spamming the logs:
[INFO] [stdout] 2022-01-11 13:40:01.157 WARN 76859 --- [ udp-epoll-2] i.m.s.reactor.netty.channel.FluxReceive : [6d1243de, L:/127.0.0.1:58160 - R:localhost/127.0.0.1:8125] An exception has been observed post termination, use DEBUG level to see the full stack: java.net.PortUnreachableException: readAddress(..) failed: Connection refused
Using DEBUG level:...
ANSWERAnswered 2022-Jan-13 at 17:47
assuming statsd is not used and configured on your side, since it's pointed to localhost, you may disable it by setting
I'd like connect to Delta using JDBC and would like to run the Spark Thrift Server (STS) in local mode to kick the tyres.
I start STS using the following command:...
ANSWERAnswered 2022-Jan-08 at 06:42
Once you can copy io.delta:delta-core_2.12:1.0.0 JAR file to $SPARK_HOME/lib and restart, this error goes away.
You can use netty 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 netty 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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