OPTIONS

sh._lastMigration()

Definition

sh._lastMigration(namespace)

Returns information on the last migration performed on the specified database or collection.

The sh._lastMigration() method has the following parameter:

Parameter Type Description
namespace string The namespace of a database or collection within the current database.

Output

The sh._lastMigration() method returns a document with details about the last migration performed on the database or collection. The document contains the following output:

sh._lastMigration._id

The id of the migration task.

sh._lastMigration.server

The name of the server.

sh._lastMigration.clientAddr

The IP address and port number of the server.

sh._lastMigration.time

The time of the last migration, formatted as ISODate.

sh._lastMigration.what

The specific type of migration.

sh._lastMigration.ns

The complete namespace of the collection affected by the migration.

sh._lastMigration.details

A document containing details about the migrated chunk. The document includes min and max sub-documents with the bounds of the migrated chunk.