What is the difference between enabled : false and index : 'no' in elasticsearch?

Question

When mapping fields in elaticsearch, what's the difference between setting

enabled : false

for the field vs setting

index : 'no'

?

Answer 1

As I understand, index: no is applicable to core types only, whereas enabled: false is defined for object types and ElasticSearch specific fields such as _index, _all, ...

From the documentation:

The enabled setting, which can be applied only to the mapping type and to object fields. It causes Elasticsearch to skip parsing of the contents of the field entirely.

---

Example of enabled usage (YAML format):

---
...
_all:
      enabled: false
...