How to get the value of `dynamic_date_format` and other mapping Elasticsearch settings

New to Elasticsearch, and we are wondering how to check the current value of dynamic_date_formats.

The official online document, here, provides the below example of setting customized value, but we did not find how to get its value. Either an API call or a sample URL command will help.

PUT my-index-000001
{
  "mappings": {
    "dynamic_date_formats": ["MM/dd/yyyy"]
  }
}

Also, we are looking into the other arguments of the mapping settings, e.g., the Mapping limit settings, including index.mapping.total_fields.limit and others. So, we wonder how to check the values of these arguments as well.

We highly appreciate any hints and suggestions.

You can retrieve the index.mapping.total_fields.limit or any other settings from an index using the command below:

GET index/_settings?include_defaults=true&filter_path=**.total_fields

Regarding dynamic_date_formats, either you have specified it when creating your index and you can retrieve the value using the command below:

GET test/_mapping?filter_path=**.dynamic_date_formats

Or you haven't specified it and the default value is the following that you can hardcode into your logic

[ "strict_date_optional_time","yyyy/MM/dd HH:mm:ss Z||yyyy/MM/dd Z"]