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VectorIndex Policy[No Release]: Adds Support for QuantizerType in IndexingPolicy#5502

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Dec 8, 2025
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VectorIndex Policy[No Release]: Adds Support for QuantizerType in IndexingPolicy#5502
microsoft-github-policy-service[bot] merged 9 commits into
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users/aavasthy/vector_quantizertype

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@aavasthy aavasthy commented Nov 17, 2025 •
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Description

  • Updated direct package version as this PR needed some code references from shared files.

  • Add a new field "quantizerType": "product/spherical" to vector index definition in indexing policy.

Example:

    "vectorIndexes": [
      {
        "path": "/vector1",
        "type": "diskANN",
        "quantizerType": "product"
        "quantizationByteSize": 4,
        "indexingSearchListSize": 50
      }
    ],

Type of change

Testing against a live account that has Vector Search for NoSQL API feature enabled:

  • Ran e2e test and created a container with
      Collection<Cosmos.VectorIndexPath> vectorIndexes = new Collection<Cosmos.VectorIndexPath>
{
   new Cosmos.VectorIndexPath
   {
       Path = "/embedding",
           Type = Cosmos.VectorIndexType.DiskANN,
       QuantizerType = Cosmos.QuantizerType.Product
   }
};
       properties.IndexingPolicy.VectorIndexes = vectorIndexes;

Checked in portal and it has the quantizer type value getting reflected as product:
image
And checked with quantizer type as Spherical
image

Please delete options that are not relevant.

  • New feature (non-breaking change which adds functionality)

Closing issues

To automatically close an issue: closes #IssueNumber

@aavasthy aavasthy self-assigned this Nov 17, 2025
kirankumarkolli
kirankumarkolli reviewed Nov 19, 2025
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Comment thread Microsoft.Azure.Cosmos/src/Resource/Settings/QuantizerType.cs
@aavasthy aavasthy added the auto-merge Enables automation to merge PRs label Dec 4, 2025
NaluTripician
NaluTripician reviewed Dec 4, 2025
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Comment thread Directory.Build.props
@aavasthy aavasthy removed the auto-merge Enables automation to merge PRs label Dec 4, 2025
@kundadebdatta kundadebdatta added auto-merge Enables automation to merge PRs vector-similarity labels Dec 8, 2025
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Reviewers

@kirankumarkolli kirankumarkolli kirankumarkolli approved these changes

@NaluTripician NaluTripician NaluTripician approved these changes

@kundadebdatta kundadebdatta kundadebdatta approved these changes

@khdang khdang Awaiting requested review from khdang

@sboshra sboshra Awaiting requested review from sboshra

@adityasa adityasa Awaiting requested review from adityasa

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@FabianMeiswinkel FabianMeiswinkel Awaiting requested review from FabianMeiswinkel

@kirillg kirillg Awaiting requested review from kirillg

@Pilchie Pilchie Awaiting requested review from Pilchie

Assignees

@aavasthy aavasthy

Labels

auto-merge Enables automation to merge PRs vector-similarity

Projects

Azure Cosmos SDKs
Status: Done

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4 participants

@aavasthy @kundadebdatta @kirankumarkolli @NaluTripician