How to avoid duplicate fields copied during bulk indexing?

Elastic Stack Elasticsearch
1

Hi, I'm trying to create my mappings have multiple types within the same index.

This is how it looks:

mappings := map[string]interface{}{
	"properties": map[string]interface{}{
		"category": map[string]interface{}{
			"properties": map[string]interface{}{
				"id": map[string]interface{}{"type": "long"},
				"name": map[string]interface{}{"type": "text"},
				"type": map[string]interface{}{"type": "text"},
				"image_version": map[string]interface{}{
					"type": "nested",
					"properties": map[string]interface{}{
						"image_height": map[string]interface{}{"type": "float"},
						"image_width": map[string]interface{}{"type": "float"},
					},
				},
			},
		},
	},
}

This is written in Golang. Consider for assume we've mappings for promotion type too.

When I try to bulk index the data, it creates mappings like this:

{
  "mappings": {
    "properties": { 
      "category": {
        "properties": {
          "id": {
            "type": "integer"
          },
          "name": {
            "type": "keyword"
          },
          "type": {
            "type": "text"
          },
          "image_version": {
            "type": "nested",
            "properties": {
              "image_height": {
                "type": "float"
              },
              "image_width": {
                "type": "float"
              }
            }
          }
        }
      },
      "id": {
        "type": "integer"
      },
      "name": {
        "type": "keyword"
      },
      "type": {
        "type": "text"
      },
      "image_version": {
        "type": "nested",
        "properties": {
          "image_height": {
            "type": "float"
          },
          "image_width": {
            "type": "float"
          }
        }
      },
      "promotions": {
        "properties": {
          "activity_name": {
            "type": "text"
          },
          "app_type": {
            "type": "text"
          }
        }
      }
    }
  }
}

As you can notice it is copying category fields outside category root field too.

Why the fields inside properties are being copied outside category too? How should I avoid it?

It would be great if anyone can help me with a proper solution. Thank you!

2

Let's keep the discussion only in How to use custom field type in mappings to achieve multiple type mappings within an index? as this is basically the same topic.

I'm closing this thread.