Is it possible to update `store` value of the mapping of an existing field in ElasticSearch 6.x index?

Question

I have an index created by ElasticSearch 6.8.7. I query against some fields which don't correspond to document's fields, because they are merged copies of document's ones. At index creation their store value was set to false . Now I need to get highlights, but the query fields content is not stored. Can I update mapping and set store to true ? Index's _source is enabled. The docs don't mention this ability, and I can't try to update store on my production cluster.

Answer 1

No, it's not.

In general, the mapping for existing fields cannot be updated. There are some exceptions to this rule. For instance:

• new properties can be added to Object datatype fields.
• new multi-fields can be added to existing fields.
• the ignore_above parameter can be updated.

Source .

Also, I tried to update mapping on a sample index, and ES didn't allow me to update store value of an existing field. That is understandable, but still sad.