Azure Cosmos DB

Have feedback for Azure Cosmos DB product? Submit your idea here or upvote other ideas. All feedback is monitored and reviewed by the Azure Cosmos DB team. 

This site is for feature suggestions only. For technical questions or issues, please submit them to StackOverflow,where we and the community can better help you.

Please use the following categories when submitting your idea.

SQL API: Query language features, syntax using SQL API, indexing, any other core features in Azure Cosmos DB.

Gremlin API: Graph features and capabilities using Gremlin API.

Cassandra API: Features and capabilities using Cassandra API.

MongoDB API: Features and capabilities using MongoDB API.

Table API: Features and capabilities using Table API.

Etcd API: Features related to using etcd as a configuration store for Kubernetes.

Built-in Apache Spark: Features related to built-in Apache Spark in Azure Cosmos DB.

Built-in Notebooks: Features related to built-in Notebooks in Azure Cosmos DB.

SDK: Features related to Azure Cosmos DB SDKs for SQL API.

Change Feed: Features related to Change Feed.

Management: All management features, backup/restore,monitoring, ARM, PowerShell and CLI.

Portal: All features for Azure Portal and Cosmos DB Explorer.

Emulator: Features related to the Azure Cosmos Emulator.

Other: Features not related to any other category.

Security:
Authentication, authorization,permissions and encryption features.

Monitoring:
Metrics, monitoring, alerts,and diagnostics features.

Server-side: Stored procedures, Triggers,and User-Defined Functions.
  • Hot ideas
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  • My feedback
  1. Compress query results

    Compress query results if requested by the client. This could significantly improve network throughput for large queries.

    55 votes
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    1 comment  ·  SQL API  ·  Flag idea as inappropriate…  ·  Admin →
  2. First Class Support for Create/Update Differentiation w/i ChangeFeed

    Add a mechanism to determine the type of change feed event being processed. Actions (e.g. Create/Update/Delete) should be accessible via the FeedResponse<T> (for the .net SDK) for each document.

    In addition, CreateDocumentChangeFeedQuery should allow for filtering by these new action types (w/i the DB). Perhaps other [document-level] criteria should be supported too.

    54 votes
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    6 comments  ·  Change Feed  ·  Flag idea as inappropriate…  ·  Admin →
  3. Azure Cosmos DB doesn't support basic sort

    Mongo supports case insensitive sort through collation usage.
    When I tested on mongo locally it worked, when deployed on azure platform it just started throwing error:
    "MongoError: server bmcldocdb.documents.azure.com:10255 does not support collation"

    52 votes
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    1 comment  ·  MongoDB API  ·  Flag idea as inappropriate…  ·  Admin →
  4. stored procedures & functions in .NET (C#)

    Would be great to have the option to implement stored procedures, functions and triggers in .NET (C#) as well.

    52 votes
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    2 comments  ·  SQL API  ·  Flag idea as inappropriate…  ·  Admin →
  5. The ability to reference JavaScript libraries (e.g. underscore) within server-side scripting

    It'd be nice to be able to reference javascript libraries within server-side scripting. Something like an AMD or RequireJS loader.

    For example:
    var _ = require('lodash');

    51 votes
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    4 comments  ·  SQL API  ·  Flag idea as inappropriate…  ·  Admin →
  6. Support stored procedure execution over all partitions

    So I'm in a bit of a corner performance wise. Querying data from a broad and not necessarily well defined range of devices - some update once a day, some every 10 seconds. Need to query over the longer time span to make sure all devices are represented but only need the latest record. So might need a 100 or so results at the end but due to the lack of a GROUP BY function in Cosmos SQL, the output can be more like 100,000 which then have to be filtered out client side. No worries, just use a stored…

    51 votes
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    5 comments  ·  SQL API  ·  Flag idea as inappropriate…  ·  Admin →
  7. Compress stored data

    Please compress data in place for more efficient use of storage.

    For example, I recently exported the entire dataset from a collection and gathered the following stats:

    DocumentDB Data Storage: 627 MiB (including hidden fields and other overhead I assume, but not Indexes)
    Exported JSON: 461.72 MiB
    Compressed JSON: 47MiB

    So potentially a 10x saving in data storage size.

    50 votes
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    4 comments  ·  SQL API  ·  Flag idea as inappropriate…  ·  Admin →
  8. Support $geonear query in Azure Cosmos DB Mongo API

    I want to transition my application to use Azure Cosmos DB. It is currently using MongoDB with the latest Mongo C# Driver.

    Most of the functionality is working with just updating the connection string to point to the Azure Cosmos DB.

    However some of the major functionality in my application makes use of MongoDB geonear functionality with code as below:

    public IEnumerable<Tuple<Location, double>> GeoNear(StagedLocation stagedLocation, int matchRadius)
    {
    var geoPoint = new BsonDocument
    {
    {"type","Point"},
    {"coordinates",new BsonArray(new []{ stagedLocation.Address.Longitude.Value, stagedLocation.Address.Latitude.Value })}
    };

    var geoNearOptions = new BsonDocument
    {
    {"near", geoPoint},
    {"spherical", true },
    {"limit", 20},
    {"distanceField", "Distance"},
    {"maxDistance", Convert.ToDouble(matchRadius)},
    };

    50 votes
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    3 comments  ·  MongoDB API  ·  Flag idea as inappropriate…  ·  Admin →
  9. Configure RU per region

    For a database/collection that is made available in several regions, make it possible to provision RU capacity independently in each region. Use case: Secondary backup region that exists only as an up-to-date mirror of data in case the primary becomes unavailable, not to offload read operations under normal operation. Currently this means provisioning unused RU capacity, at a high cost, in the secondary region.

    49 votes
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    2 comments  ·  Other  ·  Flag idea as inappropriate…  ·  Admin →

    Hi Magnus. This is currently unplanned by us for our road map. Some context and feedback for you on this.

    First, to do the replication itself to the secondary region you need RU/s sufficient to support the request rates for the primary region itself. Replication and writing to the secondary region itself is not free so there needs to be sufficient throughput provisioned to do that.

    Second, for the secondary region to be able to function as the primary should a fail over occur, the replica region itself needs sufficient throughput to function as the primary.

    Thanks again for your suggestion. Will mark as unplanned for now in case circumstances ever do change.

  10. Support $GraphLookup

    $graphLookup is not implemented in Mongo API
    If you try to do this with Mongo API (or Cosmos DB) + Gremlin you need to know what the relationships are upfront. Need DYNAMIC joins 
    which MongoDB supports today.

    47 votes
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    2 comments  ·  MongoDB API  ·  Flag idea as inappropriate…  ·  Admin →
  11. Set Account Level throughput on Cosmos DB Table API with ARM template

    Make it possible to set "Account level throughput" on a Table API account through ARM template or Powershell.

    According to the official Twitter handle of Azure Cosmos DB, it is only possible to set the "Account level throughput" on a Table API database account through the Azure Portal. You cannot do this with an ARM template.
    https://twitter.com/AzureCosmosDB/status/1175071433229312001

    45 votes
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    0 comments  ·  Management  ·  Flag idea as inappropriate…  ·  Admin →
  12. Support Pandas DataFrame

    Support saving pandas data frames directly to Tables.

    43 votes
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    0 comments  ·  Table API  ·  Flag idea as inappropriate…  ·  Admin →
  13. 42 votes
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    3 comments  ·  MongoDB API  ·  Flag idea as inappropriate…  ·  Admin →
  14. Move RU throughput allocation from Collections to Database Level and viceversa

    We have multiple databases with many collections and would like to move the throughput allocation from single collections to Database level without recreating it and migrating everything.

    41 votes
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    5 comments  ·  Other  ·  Flag idea as inappropriate…  ·  Admin →
  15. Implement a GraphQL Provider (repost)

    (Previous post with the same title was closed without giving the correct solution.)

    graphql {http://graphql.org/} is becoming increasingly adopted by front end frameworks (including mobile) for querying backend / API data.

    Rather than having to translate each graphql query into a DocumentDB client call it would be optimal and very powerful to issue the query directly.

    It would also provide enhanced query abilities over the existing REST approach.

    41 votes
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    1 comment  ·  Other  ·  Flag idea as inappropriate…  ·  Admin →
  16. Support strategies on graph traversals

    Currently, the graph traversal in Cosmos DB graph (usually referenced by 'g') does not support the 'withStrategies'-method that is normally part of a Tinkerpop implementation. 'withStrategies' allows e.g to enhance the traversal with custom vertex- and edge-filtering on every step (by a SubgraphStrategy).

    40 votes
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    5 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →
  17. Add support for latest $lookup step in aggregation pipeline

    In v3.6 of Mongo, the $lookup step of an aggregation pipeline added the ability to join on conditions instead of just an exact match. This is thoroughly documented in the official documentation.

    https://docs.mongodb.com/manual/reference/operator/aggregation/lookup/index.html#join-conditions-and-uncorrelated-sub-queries

    When I attempt to use the step in CosmosDB, I receive the error "Unrecognized parameter to $lookup: let" which indicates that the latest API is not yet supported.

    39 votes
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    5 comments  ·  MongoDB API  ·  Flag idea as inappropriate…  ·  Admin →
  18. PHP SDK For DocumentDB

    Microsoft Have been done so many great things ,but all these are not perfact . But i've seen the change of microsoft, and hope more change.

    PHP is so popular for web developing ,plz support it.

    37 votes
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    4 comments  ·  SDK  ·  Flag idea as inappropriate…  ·  Admin →
  19. add spatial support to Graph API

    Enable the same support for spatial queries that exists for DocumentDb for graph elements. Similar to Neo4j Spatial.

    34 votes
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    0 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →
  20. Improve range() step costs

    Graph API is nice, however in its current state it is unusable for large data sets due to high RU costs.
    We are trying to implement paging for retrieving large amounts of data, however RU cost is unacceptable. Query "g.V().range(0,100)" costs 63.11 RU, however "g.V().range(2000,2100)" costs 338.06 RU even though it is same amount of data. Higher values are even more expensive meaning it's impossible to retrieve high amount of data without scaling up throughput.

    34 votes
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    3 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →
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