CosmosDB, Vector search, diskANN

Vladimir Nesterovsky 20

Trying to experiment with vector search in cosmos db I get an exception:

Microsoft.Azure.Cosmos.CosmosException: Response status code does not indicate success: BadRequest (400); Substatus: 0;

ActivityId: xxx; Reason: (Message: {"Errors":["Vector Indexing Policy's Index

Type::diskANN has been provided but the capability has not been enabled on your account. Please contact Azure Support [[

https:\/\/azure.microsoft.com\/support](https:\/\/azure.microsoft.com\/support)] to enable it."]}

ActivityId: xxx, Request URI:

/apps/xxx/services/xxx/partitions/xxx/replicas/xxx, RequestStats: , SDK: Microsoft.Azure.Documents.Common/2.14.0,

Microsoft.Azure.Cosmos.Tracing.TraceData.ClientSideRequestStatisticsTraceDatum, Windows/10.0.22631

cosmos-netstandard-sdk/3.34.2);

How can I enable it?

1 answer

Sajeetharan 2,031 Reputation points Microsoft Employee

2024-06-03T04:37:35.29+00:00

You can follow the instructions here to enable this feature.

Vector search for Azure Cosmos DB for NoSQL requires preview feature registration on the Features page of your Azure Cosmos DB . Follow the below steps to register:

Navigate to your Azure Cosmos DB for NoSQL resource page.

Select the "Features" pane under the "Settings" menu item.

Select for “Vector Search in Azure Cosmos DB for NoSQL”.

Read the description of the feature to confirm you want to enroll in the preview.

Select "Enable" to enroll in the preview.
Please sign in to rate this answer.
Vladimir Nesterovsky 20 Reputation points

2024-06-03T09:32:02.6066667+00:00

Feature is enabled.

flat and quantizedFlat index types are available.

diskANN - is not available neither from API nor from portal.

Sajeetharan 2,031 Reputation points Microsoft Employee

2024-06-03T09:38:32.0233333+00:00

Did you follow the instructions on the above doc?

Vladimir Nesterovsky 20 Reputation points

2024-06-03T09:46:59.93+00:00

Yes. I did follow instructions of the above doc and have enabled the feature.

I also followed instructions from

https://video2.skills-academy.com/en-us/azure/cosmos-db/nosql/vector-search#enroll-in-the-vector-search-preview-feature

to create index.

In addition, I filled the form mentioned in the article:

"DiskANN is available in early gated-preview and requires filling out this form."

Still I get an error.

Vladimir Nesterovsky 20 Reputation points

2024-06-03T09:55:53.8533333+00:00

Following is the error message I get in portal, while trying to create a container with vector index:

Error while creating container DocumentsEmbedding: Message: {"code":"BadRequest","message":"Message: {\"Errors\":[\"Vector Indexing Policy's Index Type::DiskANN is invalid, Valid types are 'flat' or 'quantizedFlat'\"]}\r\nActivityId: xxx, Request URI: /apps/xxx/services/xxx/partitions/xxx/replicas/xxx, RequestStats: , SDK: Microsoft.Azure.Documents.Common/2.14.0"}, Request URI: /dbs/xxx/colls, RequestStats: , SDK: Microsoft.Azure.Documents.Common/2.14.0, Microsoft.Azure.Documents.Common/2.14.0, Microsoft.Azure.Documents.Common/2.14.0, Microsoft.Azure.Documents.Common/2.14.0, Microsoft.Azure.Documents.Common/2.14.0 ActivityId: xxx, Microsoft.Azure.Documents.Common/2.14.0

Sajeetharan 2,031 Reputation points Microsoft Employee

2024-06-03T10:08:14.1833333+00:00

did you sign up the form?

Vladimir Nesterovsky 20 Reputation points

2024-06-03T10:16:01.2133333+00:00

I singed the form https://aka.ms/DiskANNSignUp

Sajeetharan 2,031 Reputation points Microsoft Employee

2024-06-03T15:13:54.4733333+00:00

ok it needs to get approved, till that you won't be able to use. if it has not been approved, open a support ticket

Vladimir Nesterovsky 20 Reputation points

2024-06-06T14:49:56.4733333+00:00

After several days nothing is still working.

How can I open a support ticket?

ShaktiSingh-MSFT 14,281 Reputation points Microsoft Employee

2024-06-10T05:30:32.8266667+00:00

Hi Vladimir Nesterovsky •,

Could you send an email to AzCommunity@Microsoft.com with your Subscription ID and thread link to this post, and I will enable a one-time free support request for your subscription.

Please reference this forum thread in the subject:

ATTN: SHAKTI - CosmosDB, Vector search, diskANN

Regards,

@ShaktiSingh-MSFT
Sign in to comment