apache-beam

Related question GoogleCloudPlatform/flink-on-k8s-operator#114

Is your feature request related to a problem? Please describe.
Change split values from all caps to lower case.
This makes file/directory naming more consistent with the split.

Describe the solution you'd like
TRAIN -> train
VALIDATION -> validation
TEST -> test

Describe alternatives you've considered

1. No change

• There's a bit of skew when it comes to mapping split val

When looking through the FlinkCluster CRD I can see there are securityContext definitions for Jobmanager, Taskmanger and Job specs. All of these are of the type PodSecurityContext which is fine.
Besides that it would great to be able to set the corresponding Container [SecurityContext](https://kube

Now, Apache Beam's Python SDK supports Python 3.9. Thus, we should target this python version.

To this end, we need to update our tox versions, CI, setup.py file, etc.