Feature Request - Provide alternative to datatype flattened

[JasonLaquaTR]

Is your feature request related to a problem? Please describe.
Missing efficient datatype like flattened

Describe the solution you'd like
Implement something similar to flattened that elastic search has

Describe alternatives you've considered
Some other datatype that accomplishes the same things as flattened

Additional context
Flattened is extremely useful to prevent mapping explosion and performance constraints of something like nested

[stockholmux]

Also requested in the Forums. https://discuss.opendistrocommunity.dev/t/flattened-type-with-opendistro/5014/4

[mrkamel]

and in aws forums https://forums.aws.amazon.com/thread.jspa?threadID=329703 this feature would be highly appreciated

[aparo]

I created a flattened field replacer for Elastic flattened field.
The project is here https://github.com/aparo/opendistro-flattened-mapper-plugin .
I tested with two Elastic => Opendistro clusters without issues.

[chipzzz]

@aparo this link no longer there https://github.com/aparo/opensearch-flattened-mapper-plugin :(

[daskanu]

Any update on this? Datatype 'flattened' would be really helpful for us.

[2arunpmohan]

any news on this issue