The migration from Elasticsearch up to version 7.10.2 seems easy, basically we have to upload the snapshot to S3 and restore snapshot on Opensearch, following the steps described in this article
The problem is that I am using Elasticsearch version 7.17.0 (ECE platform), and snapshots taken beyond Elasticsearch 7.10.2 are not yet compatible with OpenSearch 1.0.0
So apparently the way to go would be to use Reindex API from OpenSearch, setting a source index and a destination index, according to this article (not official AWS documentation).
So, is that the way to go, even for large datasets ? Are there other ways ?
The steps to take for this migration are well described in that non-official AWS article ?
Indices in cold tier in Elasticsearch would to go indices in cold storage in OpenSearch ?
Thank you in advance. All help/opinions around this topic (including comparisons between Elasticsearch Vs. AWS OpenSearch) are welcome.
I uploaded snapshot to S3 and tried to restore (unsuccessfully) snapshot in Opensearch, according to this article I got the same issue highlighted here.
