Indices.GetAsync() is not deserializing custom analyzers properly

[karoberts]

NEST: 7.11.1:

Elastic: 7.11.2:

I have an index with a filter and 2 analyzers under settings.index.analysis. Using NEST var info = await client.Indices.GetAsync("index") I expect to be able to see them under info.Indices["index"].Settings.Analysis, but everything under the analyzers is null in there.

I confirmed via fiddler that the data comes back in the json response from elasticsearch. For now I'm using the low level client with a hand built request, but I'd much rather use the NEST version.

Steps to reproduce:

1. Create an index with a filter and/or analyzer in the index settings
2. Call GetAsync on that index
3. Inspect response to see if the settings are there

Expected behavior
I expect that the GetIndexResponse would have the index settings fully populated

    "settings": {
        "index": {
            "analysis": {
                "filter": {
                    "autocomplete_ngram": {
                        "type": "edge_ngram",
                        "min_gram": 3,
                        "max_gram": 20
                    }
                },
                "analyzer": {
                    "index_autocomplete": {
                        "tokenizer": "keyword",
                        "filter": [
                            "lowercase",
                            "autocomplete_ngram"
                        ]
                    },
                    "search_autocomplete": {
                        "tokenizer": "keyword",
                        "filter": [
                            "lowercase"
                        ]
                    }
                }
            }
        }

you can see here how the analyzers are null in the response

[stevejgordon]

Thanks for raising this @karoberts. I'll do some investigation into this.

[stevejgordon]

Fixed in #5435 which will go into the next 7.12.0 release. We will then deserialise un-typed analyzers as CustomAnalyzer by default.