When no data structure is specified when loading the data, OpenSearch uses dynamic mapping to automatically detect the fields. To check the mapping definition of your data, OpenSearch client provides a function calledget_mapping as shown:
importpprintINDEX_NAME='epicurious-recipes'mapping_data=os_client.indices.get_mapping(INDEX_NAME)# Find index doc_typedoc_type=list(mapping_data[INDEX_NAME]["mappings"].keys())[0]schema=mapping_data[INDEX_NAME]["mappings"][doc_type]fields=list(schema.keys())pprint(fields)pprint(schema)You should be able to see the fields's output:
['calories','categories','date','desc','directions','fat','ingredients','protein','rating','sodium','title']And the mapping with the fields and their respective types.
{'calories': {'type': 'float'}, 'categories': {'fields': {'keyword': {'ignore_above': 256, 'type': 'keyword'}}, 'type': 'text'}, 'date': {'type': 'date'}, 'desc': {'fields': {'keyword': {'ignore_above': 256, 'type': 'keyword'}}, 'type': 'text'}, 'directions': {'fields': {'keyword': {'ignore_above': 256, 'type': 'keyword'}}, 'type': 'text'}, 'fat': {'type': 'float'}, 'ingredients': {'fields': {'keyword': {'ignore_above': 256, 'type': 'keyword'}}, 'type': 'text'}, 'protein': {'type': 'float'}, 'rating': {'type': 'float'}, 'sodium': {'type': 'float'}, 'title': {'fields': {'keyword': {'ignore_above': 256, 'type': 'keyword'}}, 'type': 'text'}}Read more about OpenSearch mapping in theofficial OpenSearch documentation.
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