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mongosh Method

This page documents a mongosh method. This is not the documentation for database commands or language-specific drivers, such as Node.js.

For the database command, see the reIndex command.

For MongoDB API drivers, refer to the language-specific MongoDB driver documentation.

For the legacy mongo shell documentation, refer to the documentation for the corresponding MongoDB Server release:

mongo shell v4.4

The db.collection.reIndex() drops all indexes on a collection and recreates them. This operation may be expensive for collections that have a large amount of data and/or a large number of indexes.


For MongoDB 5.0 or later, db.collection.reIndex() may only be run on standalone instances.

Changed in version 4.2.2.

For MongoDB 4.2.2 and later, db.collection.reIndex() obtains an exclusive (W) lock on the collection and blocks other operations on the collection until it completes.

For more information on locking in MongoDB, see FAQ: Concurrency.


See also:

← db.collection.mapReduce()

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