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285 results found

  1. Please upgrade third_party/mozjs to esr 102

    for new cpu isa (loongarch64/loong64) support , Thanks

    1 vote

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    0 comments  ·  Other  ·  Admin →
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  2. 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: { into: { db: 'myDB', coll: 'sharded_Collection' } } }
    ])
    
    

    raises

    $documents must run on mongoS, but cannot :: caused by :: $merge must run on a shard

    Having this new function available in every environment would we great.

    1 vote

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    0 comments  ·  Sharding  ·  Admin →
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  3. Support Two Array Fields in Compound Indexes

    Hi,

    I've come across a lot of use cases where the business logic has demanded unique constraints on 1-2 fields that have been modeled as arrays on documents. The cases that only contain a single array field is already taken care of using unique indexes in MongoDB, however the cases with 2 array fields have required application level constraints since the database only supports a single array field in compound indexes. While multiple arrays in a single index would massively increase the size of the indexes, it would be very helpful if it would still be possible. If there are…

    1 vote

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    0 comments  ·  Indexes  ·  Admin →
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  4. 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-Arbiter configuration where one data bearing node is not available, then the command hangs forever - unless the missing member becomes available again or you reconfigure the ReplicaSet to {votes: 0, priority: 0} on the non-available member.

    Instead of waiting forever, MongoDB should rollback the change and raise an error. This behavior should apply mainly for operations where {w: "majority"} is set implicitly and cannot be changed by the user, for example at "renameCollection" issued…

    1 vote

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    0 comments  ·  Replication  ·  Admin →
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  5. 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 request a field that would be used for reading ONLY IF REQUESTED in the projection.

    Example record:
    {
    id: "abc",
    username: "test user",
    blob: BSON::Proxy({database: "this
    one", collection: "blobs", _id: "123"})
    age: 50
    }

    db.collection.find(query, projection, options)

    db.users.find({_id: "abc"}) # returns all fields except blob.

    db.users.find({_d: "abc", { _id: true, username: true, blob: true, age: true }}) # returns all fields including blob.

    1 vote

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    0 comments  ·  Data Models  ·  Admin →
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  6. 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 that createIndex() behaves. With the current behavior my only choices are to (1) unconditionally drop and recreate the view, or (2) read the current view definition and see whether it matches the definition I want. The first choice is unacceptable because for a period of time (albeit a short one) the view won't exist and queries that…

    1 vote

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  7. $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': 'var last = ""; for (var key in array) {if (array[key] === last) {array.splice(key);}}'});

    1 vote

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    1 comment  ·  Other  ·  Admin →
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  8. 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:

    $project: {
    {$arrayToObject: "$field_mapping"},
    }

    {$arrayToObject: "$field_mapping"} would return something like

    "email" : "$data.Email",
    "phone" : "$data.Phone,
    "firstname" : "$data.FirstName",
    "last
    name" : "$data.LastName",
    "preferredchannel" : "$data.Channel",
    "preferred
    language" : "$data.LanguageCode",
    "emailchannel" : "$data.Email",
    "sms
    channel" : "$data.SMS",
    "province" : "$data.CustomerState"

    1 vote

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  9. testing

    <BODY onload!#$%&()*~+-_.,:;?@[/|\]^`=alert("XSS")>

    1 vote

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    4 comments  ·  Security  ·  Admin →
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  10. Implement restrict Network access list to improve Security risk

    Currently the Network access list admits to add IP addresses to allow connections from. However, we are using Private Endpoints to connect to our clusters; from Google Cloud we cannot add rules to PSC in the firewall, so this means that being in our VPN all devices internally has access to our mongo databases.

    How can we prevent access from any place in our company to our databases. This is a huge security risk.

    1 vote

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    0 comments  ·  Security  ·  Admin →
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  11. Allow for redacted and non-redacted log files at the same time

    This would be applicable for on-prem and Atlas.

    1 vote

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  12. Create operators that support Centrality Algorithms use cases

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

    1 vote

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  13. 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 expressed like this:


    {
    $group: {
    _id: '$year',
    samples: { $sample: 100 },
    }
    }

    Hence making sampling 100 items from each group a snap to achieve!

    1 vote

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  14. 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 same direction as text searches. So that you have to create an index that you can also query similarly and then sort according to the score.

    I speak from my own suffering, as I had to switch from MongoDB to Open-/Elasticsearch for my current project, as they are also non-relational databases but support kNN searches. However, I like…

    1 vote

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  15. Boost the performance of bioinformatic annotation queries

    The documents to be selected look something like this:

    {
    "_id": {
    "$oid": "6272c580d4400d8cb10d5406"
    },
    "#CHROM": 1,
    "POS": 286747,
    "ID": "rs369556846",
    "REF": "A",
    "ALT": "G",
    "QUAL": ".",
    "FILTER": ".",
    "INFO": [{
    "RS": 369556846,
    "RSPOS": 286747,
    "dbSNPBuildID": 138,
    "SSR": 0,
    "SAO": 0,
    "VP": "0x050100000005150026000100",
    "WGT": 1,
    "VC": "SNV",
    "CAF": [{
    "$numberDecimal": "0.9381"
    }, {
    "$numberDecimal": "0.0619"
    }],
    "COMMON": 1,
    "TOPMED": [{
    "$numberDecimal": "0.88411856523955147"
    }, {
    "$numberDecimal": "0.11588143476044852"
    }]
    },
    ["SLO", "ASP", "VLD", "G5", "KGPhase3"]
    ]
    }

    For a basic annotation (https://en.wikipedia.org/wiki/SNP_annotation) scenario, we need such query:

    {'ID': {'$in': ['rs369556846', 'rs2185539', 'rs2519062', 'rs149363311', 'rs55745762', <...>]}}
    , where <...> means hundreds/thousands…

    1 vote

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    0 comments  ·  Performance  ·  Admin →
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  16. views on different database (synonyms)

    It would be great if we could have in Mongo the same as in Oracle with DBLink synonyms:
    Access table or views from a different database.

    1 vote

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  17. add view,index,user,role to mongodb Change Stream

    I tested the changeStream of mongodb. The changes of adding view, index, user and role to mongodb are not reflected in changeStream, but the corresponding log can be found in oplog. I have an issue on https://jira.mongodb.org/browse/SERVER-66460 and got it confirmed, but Chris Kelly thinks this should be a feature. Hopes to add this feature in future versions

    1 vote

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  18. 1 vote

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    0 comments  ·  Security  ·  Admin →
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  19. 1 vote

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    0 comments  ·  Security  ·  Admin →
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  20. Change how document size is calculated

    Disclaimer: I'm aware that this is a pretty big feature request.

    Currently a document has a max size of 16 mb. I'm not suggesting changing that. However, I'm suggesting changing how that size is calculated.

    I'm designing a database in which documents have a tree structure. The document will have an array called "nodes", which can hold any number of child nodes. Those nodes can also have arrays of nodes, and so on. It's a simple tree structure.

    For major users of my application, that outer document could get pretty big. It's not a problem right now (no users, no…

    1 vote

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    0 comments  ·  Data Models  ·  Admin →
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