We are re-indexing data in ES cluster using _reindex API ES version 7.17.
We want to leverage automated slicing to finish the process sooner as we have really large index with doc count ~150 million.
We were following this document Reindex API | Elasticsearch Guide [7.17] | Elastic, however while using the mentioned url, we are getting error: refresh is not recognized parameter.
Please suggest if we are missing anything, just wanted to inform that we are using curl request.