Does setting "dynamic : false" on an index effect "_all" field?

Elastic Stack Elasticsearch
1

Hi all,

I set "dynamic : false" on my index. Will this effect what is indexed under "_all" field.
Does it concatenate all values or only those that my static mapping specifies ?
I am new to elasticsearch. Any will be very helpful. Thanks.

-Harika.

2

It depends on your usage scenario:

  1. "dynamic": false, means the new fields which are not defined in the mapping will be ignored, "_all" will combine the terms of all the fields together to a new filed "_all" which the high level query (like query_string or match query) will based on.
  2. if you want the additional fields to be saved and queried in "_all", you will not make "dynamic" false, otherwise you could do this, make the "dynamic" false will not effect the original.