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<!--
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********************************************************************************
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WARNING:
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DO NOT EDIT "flink/README.md"
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IT IS AUTO-GENERATED
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(from the other files in "flink/" combined with a set of templates)
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********************************************************************************
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-->
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# Supported tags and respective `Dockerfile` links
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- [`1.2.1-hadoop2-scala_2.10` (*1.2/hadoop2-scala_2.10-debian/Dockerfile*)](https://github.com/docker-flink/docker-flink/blob/263dcb48ce49fcc129bbf09f331360549d573db5/1.2/hadoop2-scala_2.10-debian/Dockerfile)
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- [`1.2.1-hadoop2-scala_2.11`, `1.2.1-hadoop2`, `1.2-hadoop2`, `hadoop2` (*1.2/hadoop2-scala_2.11-debian/Dockerfile*)](https://github.com/docker-flink/docker-flink/blob/263dcb48ce49fcc129bbf09f331360549d573db5/1.2/hadoop2-scala_2.11-debian/Dockerfile)
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- [`1.2.1-hadoop24-scala_2.10` (*1.2/hadoop24-scala_2.10-debian/Dockerfile*)](https://github.com/docker-flink/docker-flink/blob/263dcb48ce49fcc129bbf09f331360549d573db5/1.2/hadoop24-scala_2.10-debian/Dockerfile)
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- [`1.2.1-hadoop24-scala_2.11`, `1.2.1-hadoop24`, `1.2-hadoop24`, `hadoop24` (*1.2/hadoop24-scala_2.11-debian/Dockerfile*)](https://github.com/docker-flink/docker-flink/blob/263dcb48ce49fcc129bbf09f331360549d573db5/1.2/hadoop24-scala_2.11-debian/Dockerfile)
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- [`1.2.1-hadoop26-scala_2.10` (*1.2/hadoop26-scala_2.10-debian/Dockerfile*)](https://github.com/docker-flink/docker-flink/blob/263dcb48ce49fcc129bbf09f331360549d573db5/1.2/hadoop26-scala_2.10-debian/Dockerfile)
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- [`1.2.1-hadoop26-scala_2.11`, `1.2.1-hadoop26`, `1.2-hadoop26`, `hadoop26` (*1.2/hadoop26-scala_2.11-debian/Dockerfile*)](https://github.com/docker-flink/docker-flink/blob/263dcb48ce49fcc129bbf09f331360549d573db5/1.2/hadoop26-scala_2.11-debian/Dockerfile)
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- [`1.2.1-hadoop27-scala_2.10`, `1.2.1-scala_2.10`, `1.2-scala_2.10`, `scala_2.10` (*1.2/hadoop27-scala_2.10-debian/Dockerfile*)](https://github.com/docker-flink/docker-flink/blob/263dcb48ce49fcc129bbf09f331360549d573db5/1.2/hadoop27-scala_2.10-debian/Dockerfile)
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- [`1.2.1-hadoop27-scala_2.11`, `1.2.1-scala_2.11`, `1.2-scala_2.11`, `scala_2.11`, `1.2.1-hadoop27`, `1.2-hadoop27`, `hadoop27`, `1.2.1`, `1.2`, `latest` (*1.2/hadoop27-scala_2.11-debian/Dockerfile*)](https://github.com/docker-flink/docker-flink/blob/263dcb48ce49fcc129bbf09f331360549d573db5/1.2/hadoop27-scala_2.11-debian/Dockerfile)
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# Quick reference
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- **Where to get help**:
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[Community & Project Info](https://flink.apache.org/community.html)
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- **Where to file issues**:
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[https://github.com/docker-flink/docker-flink/issues](https://github.com/docker-flink/docker-flink/issues)
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- **Maintained by**:
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[members of the Apache Flink community](https://github.com/docker-flink/docker-flink)
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- **Published image artifact details**:
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[repo-info repo's `repos/flink/` directory](https://github.com/docker-library/repo-info/blob/master/repos/flink) ([history](https://github.com/docker-library/repo-info/commits/master/repos/flink))
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(image metadata, transfer size, etc)
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- **Image updates**:
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[official-images PRs with label `library/flink`](https://github.com/docker-library/official-images/pulls?q=label%3Alibrary%2Fflink)
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[official-images repo's `library/flink` file](https://github.com/docker-library/official-images/blob/master/library/flink) ([history](https://github.com/docker-library/official-images/commits/master/library/flink))
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- **Source of this description**:
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[docs repo's `flink/` directory](https://github.com/docker-library/docs/tree/master/flink) ([history](https://github.com/docker-library/docs/commits/master/flink))
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- **Supported Docker versions**:
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[the latest release](https://github.com/docker/docker/releases/latest) (down to 1.6 on a best-effort basis)
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# What is Apache Flink?
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Apache Flink is an open source stream processing framework with powerful stream- and batch-processing capabilities.
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Learn more about Flink at [https://flink.apache.org/](https://flink.apache.org/)
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> [wikipedia.org/wiki/Apache_Flink](https://en.wikipedia.org/wiki/Apache_Flink)
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# How to use this Docker image
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## Run a Flink local cluster
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To run a single Flink local cluster:
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```console
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$ docker run --name flink_local -p 8081:8081 -t flink local
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```
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Then with a web browser go to `http://localhost:8081/` to see the Flink Web Dashboard (adjust the hostname for your Docker host).
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To use Flink, you can submit a job to the cluster using the Web UI or you can also do it from a different Flink container, for example:
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```console
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$ docker run --rm -t flink flink run -m <jobmanager:port> -c <your_class> <your_jar> <your_params>
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```
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## Running a JobManager or a TaskManager
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You can run a JobManager (master).
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```console
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$ docker run --name flink_jobmanager -d -t flink taskmanager
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```
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You can also run a TaskManager (worker). Notice that workers need to register with the JobManager directly or via ZooKeeper so the master starts to send them tasks to execute.
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```console
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$ docker run --name flink_taskmanager -d -t flink taskmanager
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```
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## Running a cluster using Docker Compose
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With Docker Compose you can create a Flink cluster:
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```yml
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version: "2.1"
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services:
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jobmanager:
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image: ${FLINK_DOCKER_IMAGE_NAME:-flink}
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expose:
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- "6123"
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ports:
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- "8081:8081"
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command: jobmanager
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environment:
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- JOB_MANAGER_RPC_ADDRESS=jobmanager
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taskmanager:
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image: ${FLINK_DOCKER_IMAGE_NAME:-flink}
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expose:
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- "6121"
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- "6122"
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depends_on:
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- jobmanager
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command: taskmanager
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links:
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- "jobmanager:jobmanager"
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environment:
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- JOB_MANAGER_RPC_ADDRESS=jobmanager
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```
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and just run `docker-compose up`.
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Scale the cluster up or down to *N* TaskManagers:
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```console
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docker-compose scale taskmanager=<N>
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```
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## Configuration
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These are the default ports used by the Flink image:
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- The Web Client is on port `8081`
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- JobManager RPC port `6123`
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- TaskManagers RPC port `6122`
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- TaskManagers Data port `6121`
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# About this repository
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This repository is available on [github.com/docker-flink/docker-flink](https://github.com/docker-flink/docker-flink), and the official build is on the [Docker Hub](https://hub.docker.com/_/flink/).
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This repository is maintained by members of the Apache Flink community.
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# License
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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
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https://www.apache.org/licenses/LICENSE-2.0
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