Get distinct values from "text field" without remapping

Elastic Stack Elasticsearch
5

Try to define the runtime field without a script.

You can use just:

PUT your-index/_mapping
{
  "runtime": {
    "s3_filename": {
      "type": "keyword"
    }
  }
}

This will change the mapping of the field s3_filename to keyword on runtime (this can have some impact in the performance).

If for some reason you need to remove this runtime mapping, just use:

PUT your-index/_mapping
{
  "runtime": {
    "s3_filename": null
  }
}