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.

Azure Synapse Link: Features related to Azure Cosmos DBanalytical store and Azure Synapse Analytics run-time support

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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  1. Be able to do partial updates on document

    Allow to push only values for some fields of a document and not need to read the whole document and save it to documentDB.

    5,088 votes
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    128 comments  ·  Other  ·  Flag idea as inappropriate…  ·  Admin →
  2. Add DocumentDB Emulator support for Mac OS X and *nix

    The DocumentDB Emulator currently only supports Windows 10.

    It would be great if support for Mac OS X could be added or documentation to run it on other platforms.

    2,215 votes
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    64 comments  ·  Emulator  ·  Flag idea as inappropriate…  ·  Admin →

    Just a quick update. Work on this feature continues but is taking longer than expected.

    We have recently published guidance how how users who can run Windows in a VM whether on Parallels or Virtual Box with a Mac or Linux host can use the Cosmos emulator. Please feel free to use this as a workaround.
    https://docs.microsoft.com/en-us/azure/cosmos-db/local-emulator#running-on-mac-or-linux

    When this feature is complete we will update here.

    Thank you.

  3. Transaction support in client SDKs

    it would be useful if documentdb transactions are supported in .net, rather than just storedprocs and triggers.
    using trans = newtrans()
    try
    db.addsomething()
    db.save() //ok
    db.addother()
    db.save() //fail
    catch
    trans.rollback
    end try
    end using

    1,305 votes
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    22 comments  ·  SDK  ·  Flag idea as inappropriate…  ·  Admin →

    We recently released support for client-side transactions in our .NET SDK.

    https://devblogs.microsoft.com/cosmosdb/introducing-transactionalbatch-in-the-net-sdk/

    We would like to get your feedback on this to understand if this meets your needs for transaction support. Please read our announcement and/or feel free to try our new support then please respond to this one question survey.

    https://forms.office.com/Pages/ResponsePage.aspx?id=v4j5cvGGr0GRqy180BHbR_Lrg0nxRBtErN-GyphxUs9UQ0c1STlJTDVOT1JXUzhYVkYzU1JZSU5BTi4u

    Thank you.

  4. Offline version for mobile devices

    Like cloudant and couchbase. To be able to have local storage which can sync with the cloud once we get a network conneciton.
    It should be connection agnostic, use in the same manner if connected or not.

    1,200 votes
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    39 comments  ·  Other  ·  Flag idea as inappropriate…  ·  Admin →
  5. Set based operations (INSERT, UPDATE, DELETE)

    It would be nice to be able to update parts of documents, delete documents, and insert documents using set based operations, similar to SQL.

    e.g.
    UPDATE Users SET IsActive = 0 WHERE LastLogin < '2010-01-01'
    DELETE FROM Users WHERE LastLogin < '2009-01-01'
    INSERT INTO table2 SELECT * FROM table1

    957 votes
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    9 comments  ·  Other  ·  Flag idea as inappropriate…  ·  Admin →

    There are multiple responses to this suggestion.

    Support for SQL-like syntax for UPDATE, DELETE and INSERT INTO are not on our road map at this time.

    However, the underlying functionality for an UPDATE, SET is essentially a PATCH. This functionality we are actively working on. See this User Voice item here to track for future updates. https://feedback.azure.com/forums/263030-azure-cosmos-db/suggestions/6693091-be-able-to-do-partial-updates-on-document

    Thank you for your suggestion.

  6. Support Gremlin Bytecode to enable the fluent API of Gremlin.NET

    Azure Cosmos DB Graph API doesn't support Gremlin Bytecode. Therefor it is not possible to use the fluent traversal API of Gremlin.NET.

    Within the Azure Cosmos DB Graph .NET API (https://docs.microsoft.com/en-us/azure/cosmos-db/graph-sdk-dotnet) it is recommended to use Gremlin.NET. So it would be really nice if all features of Gremlin.NET would be supported.

    See also the idea of a "better type-safe APIs fro Gremlin" (https://feedback.azure.com/forums/263030-azure-cosmos-db/suggestions/19340761-better-type-safe-apis-for-gremlin) within the Graph API feedback.

    897 votes
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    38 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

    Update on this item.

    Bytecode implementation is now targeting the first half of 2020 to provide stability and performance improvements in the platform.

    Apologies for the delay. We are continuing to work on this. Will announce here when this becomes available.

    Thanks.

  7. Implement LIKE keyword

    Add support for the LIKE '%%' SQL keyword and associated functionality.

    851 votes
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    33 comments  ·  SQL API  ·  Flag idea as inappropriate…  ·  Admin →
  8. Support Document Versioning

    The ability to generate links to a previous version of a document would be a powerful addition DocumentDB that has many use cases.

    In my case I need a self managed profile document that needs to be referenced at point in time to be tied to an event.

    786 votes
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    12 comments  ·  SQL API  ·  Flag idea as inappropriate…  ·  Admin →

    Azure Cosmos DB now provides the ability to access the change feed (https://docs.microsoft.com/en-us/azure/cosmos-db/change-feed). A common pattern to implement eventing patterns is

    1. Store every version/change as a separate item
    2. Read the change feed to merge/consolidate changes and trigger appropriate actions downstream.

    You can also expire old versions using TTL: https://docs.microsoft.com/en-us/azure/cosmos-db/time-to-live

  9. [CosmosDB] Be able to manage Backup and Restore with Portal and APIs

    Please provide the ability to manage backup and restore on our own.

    Restore through support is not clear and inconvenient.

    It turned out restore is only available through paid support plan.

    This document https://docs.microsoft.com/en-us/azure/cosmos-db/online-backup-and-restore#restoring-a-database-from-an-online-backup does not say it in any word.

    The situation made our customer extremely unhappy.

    667 votes
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    20 comments  ·  Management  ·  Flag idea as inappropriate…  ·  Admin →
  10. Add the ability to delete ALL data in a partition

    In a partitioned collection, it would be useful to have the option delete all data with a given partitionId.

    591 votes
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    18 comments  ·  SQL API  ·  Flag idea as inappropriate…  ·  Admin →
  11. Support Cypher as a query language for Graph data

    Add Cyhper (see http://www.opencypher.org/) as a language to query graph databases. Cypher is a human readable query languages to easily access a graph database.

    597 votes
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    10 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →
  12. Add ability to rename databases and collections

    It should be possible to rename databases and collections.

    This feature is universal in all if not the vast majority of database products.

    Lack of ability to rename anything makes it very hard for us to manage releases if we are adding new data. Currently, we have to create a copy of the existing database (which is a feat in itself, since this again is not core functionality), make the change there, and then re-point the website to the updated database. All this time, we are incurring extra costs and inconvenience.

    Renaming things also allows us to correct typos, which…

    594 votes
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    14 comments  ·  Management  ·  Flag idea as inappropriate…  ·  Admin →

    The ability to rename databases and collections is not currently something that is in our road map.

    Currently the way to accomplish this task in Cosmos DB is to create a new collection with the changed name then use bulk exec or change feed to populate it.

    Thanks for your request and input on this. We may consider this for a future planning cycle.

    thanks.

  13. Add support for single entity retrieval instead of IEnumarable

    Single \ First and so are currently not supported in Document DB

    For example, the following code:

    return client.CreateDocumentQuery<TEntity>(collection.SelfLink).SingleOrDefault(x => x.Id == id);

    causes the error:

    An exception of type 'Microsoft.Azure.Documents.Linq.DocumentQueryException' occurred in Microsoft.Azure.Documents.Client.dll but was not handled in user code

    Additional information: Query expression is invalid, expression return type Entities.Models.Hierarchy is unsupported. Query must evaluate to IEnumerable.

    508 votes
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    7 comments  ·  SQL API  ·  Flag idea as inappropriate…  ·  Admin →

    Thank you for your feedback. I have discussed this in more detail with our team.

    You are correct the workaround suggested to use .AsEnumerable().FirstOrDefault(). should not be a recommended work around. This way results in materializing all documents on the client first before getting the 1st document, which is not very efficient and the exact opposite of what you are trying to achieve.

    Instead we recommend you use Take(1).AsEnumerable() and then .First() or .Single() or .FirstOrDefault() for Single() and First(). Take(1) is translated to SELECT TOP 1 and is processed server-side so more efficient than the previous suggestion and is what you are trying to achieve.

    As to the original ask. The support for these operations can be done, but this work is not prioritized against the other work we want to deliver. I will move this back as unplanned but please note this is on our roadmap.

    Thanks again…

  14. Linq provider should respect JsonSerializerSettings ContractResolvers

    JsonSerializerSettings are now supported when creating the client, as per https://feedback.azure.com/forums/263030-azure-cosmos-db/suggestions/6422364-allow-me-to-set-jsonserializersettings

    However, when using for example a CamelCasePropertyNamesContractResolver to store the data, the linq queries will fail if the properties on the POCO classes are Pascal case.

    468 votes
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    10 comments  ·  SQL API  ·  Flag idea as inappropriate…  ·  Admin →
  15. Support for transactions via Mongo 4.0 API

    Mongo 4.0 incl transactions has been released: https://www.mongodb.com/transactions.
    CosmosDB should support Mongo 4.0 API (including transactions)

    454 votes
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    19 comments  ·  MongoDB API  ·  Flag idea as inappropriate…  ·  Admin →
  16. Support ORDER BY on the ST_DISTANCE spatial function

    Ordering results by the ST_DISTANCE spatial function is currently not supported.

    434 votes
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    17 comments  ·  SQL API  ·  Flag idea as inappropriate…  ·  Admin →
  17. Implement a graphql provider

    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.

    347 votes
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    11 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →
  18. Better handling of "request limit too large"

    Here (https://docs.microsoft.com/en-us/azure/cosmos-db/performance-tips) you can see that when you have exceeded your RU/s quota, Cosmos DB will respond with HTTP Status 429 with an HTTP header x-ms-retry-after-ms telling you when you can make the next request. It also says that the request will be retried automatically, if you use the SQL API.

    For the MongoDB API, requests will not be retried automatically and there is nothing telling the user how long to wait before retrying. Instead you have to catch a MongoCommandException, look at the Code property for 16500 and guess when to retry,

    I'd like the same support…

    317 votes
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    10 comments  ·  MongoDB API  ·  Flag idea as inappropriate…  ·  Admin →
  19. Integrate with Azure Active Directory

    Really need to be able to set resource level access control integrated with Azure Active Directory. The current built-in user / resource access control is a pain to use and we end up with just using the master key and giving everyone access to everything.

    Azure SQL DB already has this, and is a pleasure to work with.

    Perhaps you should take a leaf from your sister team on this -

    https://docs.microsoft.com/en-us/azure/sql-database/sql-database-control-access-aad-authentication-get-started

    317 votes
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    14 comments  ·  Other  ·  Flag idea as inappropriate…  ·  Admin →
  20. CouchDB API for Cosmos DB

    Support the CouchDB replication protocol so that we can sync with PouchDB or Couchbase Lite NoSQL databases on mobile devices for superior online / offline capabilities.

    271 votes
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    6 comments  ·  Other  ·  Flag idea as inappropriate…  ·  Admin →
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