Hi again all,
As the subject indicates, I'm splitting the roles of my cluster into a single role per JVM. In doing so, I'm re-evaluating all my settings in my elasticsearch.yml file to make sure what I have is appropriate for the different node roles.
I'm not sure what I should have with regards to these values between client-only and data-only nodes, based on what activities happens on each:
indices.fielddata.cache.size indices.breaker.total.limit indices.breaker.request.limit indices.breaker.fielddata.limit indices.memory.index_buffer_size
Are some appropriate for client-only, and some for data-only? Or is there a reason to specify them all on both node types?
I believe I understand correctly that indexing happens on the data-only nodes, but the indexing requests themselves go to the client nodes first, and searching happens in the client-only nodes. So I'm not sure how to make best use of my heap on each of those node types.
I'm thinking I want to maximize all "search related" breakers/cache.size on the clients, and maximize indexing-related settings on the data nodes.
Perhaps something like:
indices.breaker.total.limit: 70% (the default) indices.memory.index_buffer_size: 30%
indices.fielddata.cache.size: 60% indices.breaker.total.limit: 75% indices.breaker.request.limit: 50% indices.breaker.fielddata.limit: 65%
I'd definitely appreciate some advice on this one. Am I close to on-track?
Thanks very much!