MongoDB 3.4
Categorizes incoming documents into a specific number of groups,
called buckets, based on a specified expression.
Bucket boundaries are automatically determined in an attempt
to evenly distribute the documents into the specified number of buckets.
Document fields identifier must be prefixed with $.
This member is added by an implicit conversion from BucketAuto to
CollectionsHaveToParArray[BucketAuto, T] performed by method CollectionsHaveToParArray in scala.collection.parallel.
This conversion will take place only if an implicit value of type (BucketAuto) ⇒ GenTraversableOnce[T] is in scope.
$bucket aggregation stage.
MongoDB 3.4 Categorizes incoming documents into a specific number of groups, called buckets, based on a specified expression. Bucket boundaries are automatically determined in an attempt to evenly distribute the documents into the specified number of buckets. Document fields identifier must be prefixed with
$
.