I have an index w 120 mil records (each record ~ 5k), and I want to use the Reindex api to create a new index w a subset of those records.
I've identified a subset of records (about 2 million) from a query and would like to use this query in the Reindex api call.
Is it best practice to move all records in a single command, or do I need to do some type of batching or throttling? I know there's a size parameter w the reindex api. If I set it to 10,000, will it move all 2 million records to the new index in batches of 10,000? Or just the first 10,000 records?