No support for max_determinized_states in _source: includes

[JaspreetSinghChahal]

Elasticsearch version : 7.*
There is no option to specify max_determinized_states in source filtering.
_source:{
"includes":["field1",..........]
}
specifying more than 1000 fields leads to "too_complex_to_detrmine_exception_error". So even if more than 1000 fields are supported in index there is no way to selectively return them (especially in reindex)

[elasticmachine]

Pinging @elastic/es-search (:Search/Search)

[elasticsearchmachine]

Pinging @elastic/es-search (Team:Search)

[benwtrent]

I wonder if this issue still exists. The way we parse given source values and grab values from _source has changed greatly in the last 4 years.

I would expect complicated source patterns to still fail, but I would expect overall support to have improved.

[jimczi]

Yes @benwtrent this PR makes the option irrelevant in newer version I think: #72277