https://www.mongodb.com/ja-jp/docs/upcoming/reference/command/mergechunks/
mergeChunks (database command) - Database Manual - MongoDB Docs
Combine contiguous chunk ranges on a shard into a single chunk using the `mergeChunks` command for sharded collections.
command manualmergechunksdatabasemongodbdocs
https://www.mongodb.com/docs/v7.0/reference/command/mergechunks/
mergeChunks (database command) - Database Manual v7.0 - MongoDB Docs
command manualmergechunksdatabasev70
https://www.mongodb.com/pt-br/docs/v5.0/reference/command/mergechunks/
mergeChunks - Manual do MongoDB v5.0 - MongoDB Docs
mergechunksmanualmongodbv50