Adding default values to the doc is not working

OpenSearch
1

Versions (relevant - OpenSearch/Dashboard/Server OS/Browser):
Latest

Describe the issue:
The null_value is configured however the field is not populated when the document is sent without the field.

Configuration:

PUT my-index-01/
{
  "mappings": {
    "dynamic": false,
    "properties": {
      "is_active": {
        "type": "boolean",
        "null_value": "false"
      }
    }
  }
}

POST my-index-01/_doc/2
{
  "keywords" : "test"
}

GET my-index-01/_search
{
  "query": {
    "match": {
      "is_active": "false"
    }
  }
}

image
image1874×964 99.6 KB

2

Figured that setting null_value is not same as setting default value.

Related -

3

Alternative is set the value to null in the indexing service. The following works alright -

PUT my-index-01/
{
  "mappings": {
    "dynamic": false,
    "properties": {
      "is_active": {
        "type": "boolean",
        "null_value": "false"
      }
    }
  }
}

POST my-index-01/_doc/2
{
  "keywords" : "test",
  "is_active" : null
}

GET my-index-01/_search
{
  "query": {
    "match": {
      "is_active": "false"
    }
  }
}