I want to deploy a flink app with multiple jobs on minikube in my linux vm,so i want to know what is the best option (what type of cluster for example) to do it and if there is any recommendations or best practices to do it i would be grateful if you could mention them. ..
I have 3 docker container which are zookeeper, kafka and dataproducer. It’s works perfectly and I get my data from a json file and I write kafka topic which named "orders" and "products" I tried to read kafka topic with using Apache Flink on my local machine (not dockerised) I couldn’t access kafka topic. Here ..
I have Windows 10 OS, docker-compose and want to work with Apache Flink tutorial Playground, docker-compose starting correctly starting docker-compose but after several minutes of work, Apache Flink has to create checkpoints, but there is some problem with access to the file system. Exception: org.apache.flink.runtime.checkpoint.CheckpointException: Could not finalize the pending checkpoint 104. Failure reason: Failure ..
How to control Flink’s jobs to be distributed/load-balanced(Evenly or another way where we can set the threshold limit for Free-Slots/Physical MEM/CPU Cores/JVM Heap Size etc..) properly amongst task-managers in a cluster? For example, I have 3 task-managers in a cluster where one task-manager is heavily loaded even though there are many Free Slots and other ..
I am currently working on stream processing messages from kafka with beam on a flink cluster. The job gets submitted to apache flinks jobmanager which then issues one of the taskmanagers. But this fails since the taskmanager tries to pull a docker image. This raises two main questions to me: Why is the jobmanager trying ..
I run a Kubernetes cluster, and I’m attempting to upgrade the flink clusters as they come with some long awaited features in the latest release 1.12 https://flink.apache.org/news/2020/12/10/release-1.12.0.html#kubernetes-high-availability-ha-service I take that the release is out already? When I attempt to update the image tag in the k8s deployment I only get "Back-off pulling image" messages. I ..
I have an Apache Flink Cluster on Openshift(Kubernetes). Sometimes one of the Taskmanager pods is restarting and report to me "exit code 255". what’s the reason for this error code? Source: Docker..
I’m running Flink on Kubernetes in a cluster of 10 nodes. I’m also using Minio for checkpointing/savepointg purposes. When I run Flink with my job.jar, I always get the following error: The program finished with the following exception: org.apache.flink.client.program.ProgramInvocationException: The main method caused an error: Failed to execute job ‘StreamingTest’. at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:302) at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:198) at ..
I am trying to deploy a flink cluster with docker compose, this has been working fine, but whenever the job manager is restarted it drops all of the JAR files. According to the flink website: https://ci.apache.org/projects/flink/flink-docs-stable/ops/deployment/docker.html I need to mount the folder location like this: – /host/path/to/job/artifacts:/opt/flink/usrlib however, upon successfully doing so, no jobs appear ..
I am using flink-playgrounds to explore flink. This playground is using docker compose and my env is win10 with hyper-v. My problem is that I can not connect to my local mysql service even though i use the vEthernet ip instead of localhost. Is there any sample I can follow? Thank you. Source: Docker..