{% if site.version contains “SNAPSHOT” %}
To be able to run Flink, the only requirement is to have a working Java 8 or 11 installation. You can check the correct installation of Java by issuing the following command:
{% highlight bash %} java -version {% endhighlight %}
Download the {{ site.version }} release and un-tar it.
{% highlight bash %} $ tar -xzf flink-{{ site.version }}-bin-scala{{ site.scala_version_suffix }}.tgz $ cd flink-{{ site.version }}-bin-scala{{ site.scala_version_suffix }} {% endhighlight %}
Flink ships with a single bash script to start a local cluster.
{% highlight bash %} $ ./bin/start-cluster.sh Starting cluster. Starting standalonesession daemon on host. Starting taskexecutor daemon on host. {% endhighlight %}
Releases of Flink come with a number of example Jobs. You can quickly deploy one of these applications to the running cluster.
{% highlight bash %} $ ./bin/flink run examples/streaming/WordCount.jar $ tail log/flink--taskexecutor-.out (to,1) (be,1) (or,1) (not,1) (to,2) (be,2) {% endhighlight %}
Additionally, you can check Flink's Web UI to monitor the status of the Cluster and running Job.
When you are finished you can quickly stop the cluster and all running components.
{% highlight bash %} $ ./bin/stop-cluster.sh {% endhighlight %} {% endif %}