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sh.splitFind()

sh.splitFind(namespace, query)
Parameters:
  • namespace (string) – Specify the namespace (i.e. “<database>.<collection>”) of the sharded collection that contains the chunk to split.
  • query – Specify a query to identify a document in a specific chunk. Typically specify the shard key for a document as the query.

Splits the chunk containing the document specified by the query at its median point, creating two roughly equal chunks. Use sh.splitAt() to split a collection in a specific point.

In most circumstances, you should leave chunk splitting to the automated processes. However, when initially deploying a sharded cluster it is necessary to perform some measure of pre-splitting using manual methods including sh.splitFind().