https://www.neo4j.com/docs/operations-manual/current/scalability/sharded-property-databases/resharding-databases/
Resharding and consolidating databases - Operations Manual
This page describes how to reshard an existing database into a new sharded property database, as well as how to consolidate a sharded property database into a...
reshardingconsolidatingdatabasesoperationsmanual
https://www.mongodb.com/ja-jp/docs/upcoming/tutorial/resharding-for-adding-and-removing-shards/
Resharding for Adding and Removing Shards - Database Manual - MongoDB Docs
Learn how to use resharding to distribute sharded collections to new shards and remove shards. Monitor progress with the $currentOp aggregation pipeline stage.
adding and removingreshardingshardsdatabasemanual