Clone index API vs. Scan and Scroll API

Elastic Stack Elasticsearch
1

Hi,
What's the better way to create a clone of my index for reindex purposes? Use the clone API or the scroll API and then bulk index? What are the pro and cons of each method?

2

I'd suggest either the clone API, or snapshot and restore (if you are already taking backups).

The clone API should be most efficient.

3

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