Using CoOrdinated nodes in ES cluster

Elastic Stack Elasticsearch
1

I have 6 nodes cluster where all nodes marked with "mdi". Now I added 3 more Co-Ordinated nodes and configured with master=false, data=false, ingest=false.
Now those nodes shows role as "-". As per doc this indicates that they are coordinated nodes.
Now I tried my runs and I hardly see these co-ordinated nodes usage.
I was expecting all requests will route via coordinated nodes. Atleast search requests.
Do I need to do any special changes to rest client to use these coordinated nodes.

2

How are you testing?

You already changed all your clients endpoints to talk only with the coordinate nodes?

3

I am using org.Elasticsearch.client and create a RestClient. Some thing like below.
For now Iam using node selector to skip dedicated masters to hit.
What should I change to hit coordinated nodes only.

			RestClientBuilder builder = RestClient.builder(hostArray)
					.setRequestConfigCallback(...)
					.setHttpClientConfigCallback(....)
					.setNodeSelector(NodeSelector.SKIP_DEDICATED_MASTERS);
4

I do not use that client, so I cannot help with the exact configuration, but if you want to use coordinating nodes you need to configure your client to connect only to the coordinate nodes.

5

ok thanks. Let me try finding any document for the same. Currently, NodeSelector supports only ALL or SKIP_DEDICATED_MASTERS. No other option to select co-ordinated nodes only.

6

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