ElasticSearch High level API create index with custom settings returns error

Question

I'm trying to create ad index with custom settings as explained here. I'm using ElasticSearch 6.3

This is my code:

public CreateIndexResponse createIndex(@NotNull String indexName) throws IOException {
        CreateIndexRequest request = new CreateIndexRequest();
        request.index(indexName);
        Settings.Builder settingsBuilder =
                Settings.builder()
                        .put("settings.analysis.filter.autocomplete_filter.type", "edge_ngram")
                        .put("settings.analysis.filter.autocomplete_filter.min_gram", "1")
                        .put("settings.analysis.filter.autocomplete_filter.max_gram", "10")
                        .put("settings.analysis.analyzer.autocomplete.type", "custom")
                        .put("settings.analysis.analyzer.autocomplete.tokenizer", "standard")
                        .putList("settings.analysis.analyzer.autocomplete.filter", "lowercase", "autocomplete_filter");
        request.settings(settingsBuilder);
        return elasticSearchClient.indices().create(request, RequestOptions.DEFAULT);
    }

I've this exception though:

ElasticsearchStatusException[Elasticsearch exception [type=illegal_argument_exception, reason=unknown setting [index.settings.analysis.analyzer.autocomplete.filter] please check that any required plugins are installed, or check the breaking changes documentation for removed settings]]

I'm using a AWS ElasticSearch instance. I prefer to use the builder rather than plain JSON to create my settings request. Am I doing something wrong?

drenda · Accepted Answer · 2019-01-23 17:00:33Z

I found the problem. It seems keys must not include the settings prefix.

The working code is so:

public CreateIndexResponse createIndex(@NotNull String indexName) throws IOException {
    CreateIndexRequest request = new CreateIndexRequest();
    request.index(indexName);
    Settings.Builder settingsBuilder =
            Settings.builder()
                    .put("analysis.filter.autocomplete_filter.type", "edge_ngram")
                    .put("analysis.filter.autocomplete_filter.min_gram", "1")
                    .put("analysis.filter.autocomplete_filter.max_gram", "10")
                    .put("analysis.analyzer.autocomplete.type", "custom")
                    .put("analysis.analyzer.autocomplete.tokenizer", "standard")
                    .putList("analysis.analyzer.autocomplete.filter", "lowercase", "autocomplete_filter");
    request.settings(settingsBuilder);
    return elasticSearchClient.indices().create(request, RequestOptions.DEFAULT);
}

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