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.

How can we improve Azure Cosmos DB?

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  1. 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.

    938 votes
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    40 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →
    started  ·  AdminAzure Cosmos DB Team (Product Manager, Microsoft Azure) responded

    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.

  2. 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.

    606 votes
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    10 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

  3. 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.

    357 votes
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    11 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

  4. Gremlin queries from stored procedures

    It would be nice to have the ability to execute Gremlin queries against the Graph API from a stored procedure. Ideally, this would also enable transactions.

    170 votes
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    7 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

  5. Support for W3C SPARQL as a query language

    SPARQL is a mature W3C standard for querying and updating graph-like data with well defined semantics and rich query capabilities.

    http://en.m.wikipedia.org/wiki/SPARQL

    142 votes
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    5 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

  6. Microsoft join and support GQL

    I think it would be a great benefit for Cosmos DB to support the new movement to get to a single Graph Query Language. Microsoft joining this movement might help in rapid evolution and acceptance of such a language.

    Taken from https://neo4j.com/blog/time-for-single-property-graph-query-language/:

    The time has come to create a single, unified property graph query language.

    Different languages for different products help no one. We’ve heard from the graph community that a common query language would be powerful: more developers with transferable expertise; portable queries; solutions that leverage multiple graph options; and less vendor lock-in.

    One language, one skill set.

    …

    93 votes
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    1 comment  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

  7. Unique indexes on Graph vertex/edge properties

    I need to ensure global uniqueness for things like username/email/mobile number/etc. Since we no longer have traditional SQL, this capability is lacking. Allow me to define unique indexes so the write region has only one occurrence of a distinct value.

    Ideally, this should also make FILTERED unique indexes possible.

    87 votes
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    6 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

  8. Support for Graph API in Data Migration tool

    Looking for a way to do backup/restore or manual export/import of a Cosmos DB graph using Graph API - or equivalent.
    I want to be able to restore state of a database while developing and found that Data Migration tool can do what I want, but does not support Graph API.

    78 votes
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    2 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

  9. [Gremlin] Paging Support

    Please add paging support for Cosmos Graph DB via the Gremlin API. Traversing the whole graph for a large set of vertices can be very expensive. Paging would allow better efficiency when targeting a subset of a large set of vertices.

    56 votes
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    under review  ·  1 comment  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

  10. 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.

    51 votes
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    4 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

  11. 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).

    49 votes
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    5 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

  12. add spatial support to Graph API

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

    49 votes
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    0 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

  13. CosmosDB Graph API should support array types inside Gremlin properties

    Currently, the CosmosDB Graph API does not support array types inside of Gremlin properties. This forces users to rebuild their graph models to match what the Graph API requires. The CosmosDB Graph API should support array types inside of Gremlin properties.

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

  14. Support Math functions in the graph

    simple arthimatic (like computing %s) have to be done after extracting the data. pl support math step

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

  15. Use a domain ontology (RDF/OWL) as a scheme in Graph DB?

    In Cosmos Graph DB, I would like to be able to import a domain ontology (RDF/OWL) as a scheme to model data.

    29 votes
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    1 comment  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

  16. Support multiple labels on vertices and allow searching by one of those labels

    In order to represent inheritance in the graph DB, it is useful to have multiple labels on vertices and to be able to search by one of them, e.g.:

    V1 labels = "human | man"
    V2 labels = "human | woman"

    a query for all "human" returns both V1 and V2,
    whereas a query for all "man" returns V1 only.

    Currently, this is possible in Neo4j:
    https://tinkerpop.apache.org/docs/current/reference/#multilabel

    23 votes
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    0 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

  17. To be upto date version of TinkerPop in Azure Cosmos Graph DB

    Apache TinkerPop Graph released v3.4.2 on 28th May 2019, but it seems that Azure Cosmos DB graph is still supporting the v3.2 which was released a year back from today. Azure Cosmos Graph DB should be upto date to support the latest version of Apache TinkerPop Graph.

    TinkerPop v3.4 supports various features like having support of min and max operations on comparable like string.

    21 votes
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    0 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →
    unplanned  ·  AdminAzure Cosmos DB Team (Product Manager, Microsoft Azure) responded

    Hello and thanks for your request. We support 3.4 from a driver and connectivity perspective but there are a number of features we haven’t implemented such as min and max on non-decimal values.

    These are currently on our backlog to implement so will mark this as unplanned for now which will keep this request open. When this moves off of our backlog we will mark this as planned and update you here.

    Thank you.

  18. Support for schemas (full, mixed and none)

    Support schema-full and schema-mixed modes like OrientDB. This way one can design a graph with vertex and edge classes. This is extremely useful when modelling known domains and removes all burden to do this in code.

    21 votes
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    2 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

  19. Allow shortestPath and sum steps

    I want to make traversals finding the shortest path between one or more vertices. I need to be able to use shortestPath step or at least have sum step to sum up the edge weights to accomplish this.

    19 votes
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    2 comments  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →

  20. Gremlin Graph: Add support for array values in group() and groupCount()

    You should be able to group by an array of values. it is perfectly valid to do a group() or groupCount() like so:

    g.V().groupCount().by(values('id','name').fold())

    Other Graphs implementing Gremlin will give you a result, while CosmosDB fails with:

    "Unexpected Error: Cannot resolve object to a primitive value."

    16 votes
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    1 comment  ·  Gremlin API  ·  Flag idea as inappropriate…  ·  Admin →
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