[jira] [Created] (FLINK-12749) FLINK-12748 - Docker Playgrounds - Flink Cluster Playground

["Konstantin Knauf (JIRA)" <ji...@apache.org>]

Konstantin Knauf created FLINK-12749:
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             Summary: FLINK-12748 - Docker Playgrounds - Flink Cluster Playground
                 Key: FLINK-12749
                 URL: https://issues.apache.org/jira/browse/FLINK-12749
             Project: Flink
          Issue Type: Sub-task
            Reporter: Konstantin Knauf


The planned structure for the new Getting Started Guide is

    Flink Overview (~ two pages)
    Project Setup
    Quickstarts
        Example Walkthrough - Table API / SQL
        Example Walkthrough - DataStream API
    Docker Playgrounds
        Flink Cluster Playground
        Flink Interactive SQL Playground

In this ticket we add the Flink Cluster Playground, a docker-compose based setup consisting of Apache Kafka and Apache Flink (Flink Session Cluster), including a step-by-step guide for some common commands (job submission, savepoints, etc).

*Some Open Questions:*
* Which Flink images to use? `library/flink` with dynamic properties would be the most maintainable, I think. It would be preferable, if we don't need to host any custom images for this, but can rely on the existing plain Flink images.
* Which Flink jobs to use? An updated version {{org.apache.flink.streaming.examples.statemachine.StateMachineExample}} might be a good option as it can with or without Kafka and contains a data generator writing to Kafka already (see next questions).
* How to get data into Kafka? Maybe just provide a small bash script/one-liner to produce into Kafka topic or see question above.
* Which Kafka Images to use? https://hub.docker.com/r/wurstmeister/kafka/ seems to be well-maintained and is openly available.



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