How to stop text field to be 'keyword' in dynamic mapping

[vijaypalmanit]

running the below piece of code :

PUT /data/row/1
{
"name":"vijay"
}

creates the index where "name" field is of type "text" and "keyword" both :

{
   "data": {
      "mappings": {
         "row": {
            "properties": {
               "name": {
                  "type": "text",  <--------
                  "fields": {
                     "keyword": {
                        "type": "keyword",  <--------
                        "ignore_above": 256
                     }
                  }
               }
            }
         }
      }
   }
}

How can I stop this behaviour of text field to automatically becoming keyword, using the same above code (1st)

[dadoonet (David Pilato)]

The easiest way is to provide your mapping for this field instead of letting elasticsearch autoguessing.
Then you can also define a dynamic template which will be applied to all String fields.