Change _id field generation strategy from UUID-strings to long (by means of ES)

Elastic Stack Elasticsearch
1

Hello!

I'm wondering if I can change the default behavior for '_id' field generation.

I'd like ES to generate ids, but, instead of Flake-based string UUIDs I would like to get long (incremental, sequential) numbers (represented as strings).

Is that possible?

If yes, then how?
If no, then why?

Thank you in advance.

2

No, that is not configurable. Trying to assign sequential long identifiers in a highly concurrent and distributed system would also be very tricky and potentially quite slow. If you need them, generate then externally and send with the indexing requests.