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Database

    Support concise correlated queries for $graphLookUp

    Similar to $lookUp, support concise correlated queries for $graphLookUp. It would allow adding a $project stage to reduce overhead.
    Guest about 2 years ago in Querying & Aggregations 0 Submitted

    geoIntersects feature for 2D index

    At Airbus, we would like to use geoIntersects feature with 2D Index. We don't need 2DSphere Index, but we have to use it if we want to have geoIntersects avalaible. As a consequence, we have to manage Spherical margins which introduces a useless a...
    Guest about 6 years ago in Database 1 Submitted

    Capture pre-images for ONLY specified change events

    Currently, pre-images are captured for all updates, replacements and deletes on a given collection. Ask: Enable capture of pre-images for ['DELETED', ...] documents only. Context: A customer uses a collection for ingestion, where 16-20M do...
    Guest about 2 years ago in Database 2 Submitted

    Automatic Indexes

    MongoDB can already suggest useful indexes. Why not take the next step and allow MongoDB to autonomously create and manage indexes. Ideally it will automatically maintain the indexes over time as the structure and usage of the database changes.
    Guest about 6 years ago in Data Modeling & Indexing 1 Future Consideration

    upgrade src/third_party/gperftools ≥ 2.10

    gperftools new version support new architecture
    Guest about 2 years ago in Database 0 Submitted

    Support hex conversion and binary operators in aggregation framework

    The aggregation framework lacks function for HEX <-> Number conversion and binary operations. Such functions are common in almost every programming language. Typically and most required operations would be: - convert Int/Long to Hex - conv...
    Wernfried Domscheit about 2 years ago in Database 0 Submitted

    Use dedicated interface for replication and balancing

    Like many other big database system, MongoDB may support to specify dedicated interfaces for replication and/or for the balancer (sharding) Currently you can configure replication sets and shards members only by single hostname/IP-Address, i.e. *...
    Wernfried Domscheit over 4 years ago in Replication & Sharding 0 Submitted

    $sort should allow 0 as argument meaning "no sort"

    The $sort operator and aggregation stage should allow 0 (possibly also null) as an argument for the field sort order, meaning, "Don't sort." This allows a variable to be passed in that can conditionally skip the sort operation, in addition to the ...
    Guest about 2 years ago in Querying & Aggregations 0 Submitted

    Make it clear an index not on present on all shards

    We recently had an issue where an index did not get created on all shards. When we ran getIndexes() on mongos it reported the index was present. So we dropped another redundant index thinking all would be well - it was not. We had serious performa...
    Guest over 4 years ago in Data Modeling & Indexing 0 Submitted

    Easier way to troubleshoot storage use size discrepancy across nodes in the same replica set

    While initial sync may potentially help on this topic, it would be great if the product has any easier way to identify the cause of significantly different storage use size (so to give a better confidence if initial sync is going to help).
    Ka Lung Ng about 2 years ago in Storage & Transactions 0 Submitted