Kubernetes Quickstart does not work as written

[wsmoak]

Following the instructions on https://docs.pinot.apache.org/basics/getting-started/kubernetes-quickstart

Lead to the error:

Error: INSTALLATION FAILED: rendered manifests contain a resource that already exists. Unable to continue with install: Namespace "pinot-quickstart" in namespace "" exists and cannot be imported into the current release: invalid ownership metadata; label validation error: missing key "[app.kubernetes.io/managed-by](http://app.kubernetes.io/managed-by)": must be set to "Helm"; annotation validation error: missing key "meta.helm.sh/release-name": must be set to "pinot"; annotation validation error: missing key "meta.helm.sh/release-namespace": must be set to "pinot-quickstart"

As discussed in https://apache-pinot.slack.com/archives/C01H1S9J5BJ/p1734789818814929

Fasih Khatib provided the fix:

You'll need to execute the following commands in your terminal after you create the pinot-quickstart namespace to import the namespace into Helm.

export KIND=namespace
export NAME=pinot-quickstart
export RELEASE_NAME=pinot
export NAMESPACE=pinot-quickstart
kubectl annotate $KIND $NAME meta.helm.sh/release-name=$RELEASE_NAME
kubectl annotate $KIND $NAME meta.helm.sh/release-namespace=$NAMESPACE
kubectl label $KIND $NAME [app.kubernetes.io/managed-by=Helm](http://app.kubernetes.io/managed-by=Helm)

Can these things be built into the Helm chart somehow? If not they need to be in the instructions as additional commands to type.

[ledniy]

It appears that the file located at https://github.com/apache/pinot/blob/master/helm/pinot/templates/namespace.yaml may be unnecessary. This is because, firstly, it does not function properly with Helm (as there's --create-namespace flag), and secondly, it does not support the use of an existing namespace.

[abhioncbr]

Assigning to myself for a fix.