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Summary of the feature request

I would like to be able to run operations like ReadRows, SampleRowKeys, etc. on materialized views in Bigtable.

Desired code experience

No response

Expected results

No response

API client name and version

google-cloud-bigtable 2.38

Use case

SMRK would be helpful on a CMV for us, when we do async background data processing while using the CMV as a job queue

Additional context

Proposed PR: #17676