Fix Cosmos indexing paths for latest emulator#10084
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ReubenBond merged 1 commit intoMay 12, 2026
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Use scalar and array terminal index paths in Cosmos indexing policies so newer emulator builds accept provider container creation. Keep grain state indexing opt-in by switching the persistence provider to an excluded-root policy with explicit metadata and configured state field includes. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Problem
Newer Linux Cosmos emulator builds reject non-root wildcard paths in indexing policy exclusions such as
/StartAt/*,/Address/*, and/"State"/*. That prevents new Cosmos containers from being created in the reminders, clustering, and persistence providers.Solution
Update known scalar fields to use terminal scalar paths (
/?), update scalar array exclusions to use/[]/?, and change the grain storage container policy to exclude root while including metadata and configuredStateFieldsToIndexpaths. This follows the Cosmos indexing policy docs for scalar and array paths while preserving the existing opt-in state indexing behavior.Docs: https://learn.microsoft.com/en-us/azure/cosmos-db/index-policy#including-and-excluding-property-paths
Reviewer focus
Please look closely at
CosmosGrainStorage's excluded-root policy, since it replaces the prior recursiveStateexclusion without broadening defaultStateindexing.Microsoft Reviewers: Open in CodeFlow