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Support $documents on shards

The new aggregation operator $documents cannot be used together with $merge in a sharded cluster, you get an error: ``` db.aggregate([ { $documents: [ { _id: ObjectId("6616b08a610fab3e84d2d4ee"), a: 'foo', shardKey: 1 }, ] }, { $merge: { in...

Guest almost 3 years ago in Replication & Sharding 0 Submitted

1 VOTE

Raise an error when "majority" writes not possible

This topic is related to https://www.mongodb.com/docs/v6.0/tutorial/mitigate-psa-performance-issues/ in a PSA ReplicaSet configuration. When you try to execute a command with writeConcern `{w: "majority"}` in a three-member Primary-Secondary-Arbi...

Guest about 3 years ago in Replication & Sharding 0 Submitted

1 VOTE

BSON::Proxy Proxy content from/to another collection

I would like a mongodb data type, called BSON::Proxy # not indexable or searchable Which would hold the value of another collection & id. IE: BSON::Proxy({database: "this_one", collection: "blobs", _id: "123"}) This would allow my code to...

Guest about 3 years ago in Data Modeling & Indexing 0 Submitted

1 VOTE

Make redundant createView() a no-op

If I call createView() with params that match an existing view (in name and all other attributes), it returns an error. It'd be more convenient if the call simply succeeded without doing any work. The behavior I propose is analogous to the way tha...

Guest about 3 years ago in Querying & Aggregations 0 Submitted

1 VOTE

$addToSetIfNotExists or javascript code as array operator

This would allow for unique if not last entry into arrays. Preventing: ['one', 'one', 'two', 'three'] But allowing: ['one', 'two', 'three', 'one'] Or perhaps (to run js code on the array at the db): `.update({}, {$js: {'array_field': '...

Guest about 3 years ago in Database 1 Submitted

1 VOTE

Allow Dynamic Object In $project and $addFields

Assume I have a field mapping defined in some configuration collection of my application. And this field mapping varies for different clients on my application. I would like to pass the dynamic object in my $project or $addFields stage Like: $p...

Guest about 3 years ago in Querying & Aggregations 0 Submitted

1 VOTE

Allow for redacted and non-redacted log files at the same time

This would be applicable for on-prem and Atlas.

Guest over 3 years ago in Database 0 Submitted

1 VOTE

Create operators that support Centrality Algorithms use cases

Degree Centrality Closeness Centrality Harmonic Centrality Betweenness Centrality Eigenvector Centrality PageRank ArticleRank

Guest over 3 years ago in Querying & Aggregations 0 Submitted

1 VOTE

Add a $sample accumulator operator

So that it's easier to sample a number of items from each group, instead of writing lengthy DSL like this: https://www.mongodb.com/community/forums/t/sample-x-number-of-documents-in-each-group-with-or-after-a-group-stage/170787 Ideally it can be...

Guest over 3 years ago in Querying & Aggregations 0 Submitted

1 VOTE

kNN Searches with MongoDB

Dear MongoDB team, The possibility for kNN searches within a collection would be a real game changer. Not only in machine learning, but also in other areas you need this query method to find similar structures. Practically, it could go in the sam...

Guest over 3 years ago in Querying & Aggregations 0 Submitted

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