db.collection.initializeOrderedBulkOp()
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Tip
MongoDB also provides the db.collection.bulkWrite() method for
performing bulk write operations.
Definition
db.collection.initializeOrderedBulkOp()Important
mongosh Method
This page documents a
mongoshmethod. This is not the documentation for a language-specific driver, such as Node.js.For MongoDB API drivers, refer to the language-specific MongoDB driver documentation.
Initializes and returns a new
Bulk()operations builder for a collection. The builder constructs an ordered list of write operations that MongoDB executes in bulk.Returns: new Bulk()operations builder object.
Behavior
Order of Operation
With an ordered operations list, MongoDB executes the write operations in the list serially.
Execution of Operations
When executing an ordered list of operations, MongoDB
groups the operations by the operation type and
contiguity; i.e. contiguous operations of the same type are grouped
together. For example, if an ordered list has two insert operations
followed by an update operation followed by another insert operation,
MongoDB groups the operations into three separate groups: first group
contains the two insert operations, second group contains the update
operation, and the third group contains the last insert operation. This
behavior is subject to change in future versions.
Bulk() operations in mongosh and comparable
methods in the drivers do not have a limit for the number of operations
in a group. To see how the operations are grouped for bulk operation
execution, call Bulk.getOperations() after the execution.
Executing an ordered list of operations on a
sharded collection will generally be slower than executing an
unordered list
since with an ordered list, each operation must wait for the previous
operation to finish.
Error Handling
If an error occurs during the processing of one of the write operations, MongoDB will return without processing any remaining write operations in the list.
Examples
The following initializes a Bulk() operations builder on the
users collection, adds a series of write operations, and executes
the operations:
var bulk = db.users.initializeOrderedBulkOp(); bulk.insert( { user: "abc123", status: "A", points: 0 } ); bulk.insert( { user: "ijk123", status: "A", points: 0 } ); bulk.insert( { user: "mop123", status: "P", points: 0 } ); bulk.find( { status: "D" } ).delete(); bulk.find( { status: "P" } ).update( { $set: { comment: "Pending" } } ); bulk.execute();