This section describes behaviors and limitations for the various aggregation modalities.
- Aggregation Pipeline Optimization
- Details the internal optimization of certain pipeline sequence.
- Aggregation Pipeline Limits
- Presents limitations on aggregation pipeline operations.
- Aggregation Pipeline and Sharded Collections
- Mechanics of aggregation pipeline operations on sharded collections.
- Map-Reduce and Sharded Collections
- Mechanics of map-reduce operation with sharded collections.
- Map Reduce Concurrency
- Details the locks taken during map-reduce operations.