feat: Support running querier

[kavirajk]

We added experimental support to our helm chart to run stateless querier. via values.experimental.querier.enabled=true

If you are using the helm chart that supports querier, you can run this local cluster using QUERIER=true flag.

To use it:

1. COPY example overrides files from overrides/querier.yaml to values-overrides.yaml to the root of the repo

cp overrides/querier.yaml values-override.yaml

2. RUN the script with QUERIER=true flag

QUERIER=true S3_OFFLOAD="true" HELM_BRANCH="kavirajk/helm-chart-support-experimental-querier" ./local-k8s.sh setup

[weaviate-git-bot]

To avoid any confusion in the future about your contribution to Weaviate, we work with a Contributor License Agreement. If you agree, you can simply add a comment to this PR that you agree with the CLA so that we can merge.

beep boop - the Weaviate bot 👋🤖

PS:
Are you already a member of the Weaviate Slack channel?

[jfrancoa]

I've started a cluster with the queier which was supposed to have a single node and it started 3 replicas for the querier, you will have to override the experimental.querier.replicas values in local-k8s.sh so that both match:

kubectl get pods -n weaviate
NAME                             READY   STATUS      RESTARTS   AGE
contextionary-54866b8588-44n5n   1/1     Running     0          13m
minio                            1/1     Running     0          14m
minio-mc                         0/1     Completed   0          9m2s
querier-768f9859-9sg8m           1/1     Running     0          13m
querier-768f9859-l256f           1/1     Running     0          13m
querier-768f9859-lf7jx           1/1     Running     0          13m
weaviate-0                       1/1     Running     0          13m