Elasticsearch how to exclude some fields in indexing - elasticsearch

Question

I have a JSON data that maps automatically by the elastic search when I'm indexing the data. How can I exclude some fields in the mapping. I already tried to define the map manually but when I'm doing bulk index, It automatically maps the other fields.
ex. my JSON data looks like this
[
{
"id": "232",
"name": "Lorem",
"description": "Ipsum Dolor",
"image": [
{"key": "asadasd.jpg"},
{"key": "asasd2d.jpg"}
],
"is_active": true
},
...
My map when I'm defining it manually
PUT myindex
{
"mappings": {
"product": {
"properties": {
"id": { "type": "text },
"name": { "type": "text"},
"description": { "type": "text" },
"is_active": { "type": "boolean" }
}
}
}
}
What I want to achieve is the data still remain I just want to exclude the image property to be not included in the indexing.
So that When I query in the elastic search is still I get the data with image
Is that possible?
Thank you guys. I'm new in elasticsearch
{
"id": "232",
"name": "Lorem",
"description": "Ipsum Dolor",
"image": [
{"key": "asadasd.jpg"},
{"key": "asasd2d.jpg"}
],
"is_active": true
}

Answer 1

Yes, that's possible simply by adding dynamic: false to your mapping, like this:
PUT myindex
{
"mappings": {
"product": {
"dynamic": false, <-- add this line
"properties": {
"id": {
"type": "text"
},
"name": {
"type": "text"
},
"description": {
"type": "text"
},
"is_active": {
"type": "boolean"
}
}
}
}
}
The image array will still be in the source, but the mapping won't be modified.

Answer 2

The problem with the accepted answer is, that you need to explicitly add mappings for all fields, which is not always wanted (e.g. for array types).
You could disable the field like this:
PUT myindex
{
"mappings": {
"product": {
"properties": {
"id": { "type": "text },
"name": { "type": "text"},
"description": { "type": "text" },
"is_active": { "type": "boolean" },
"image": { "type": "object, "enabled": false }
}
}
}
}
The image array is still going to be in the _source.
Reference: https://www.elastic.co/guide/en/elasticsearch/reference/current/enabled.html