The Bigtable v1 API was deprecated on January 31, 2020 and shut down on January 31, 2021. It was replaced by the Bigtable v2 data and admin APIs.
Migrating to v2
The Bigtable v2 Data API has been generally available since June 2016, and the Bigtable v2 Admin API has been GA since July 2017.
If you connect to Bigtable using an early version of one of the Bigtable client libraries, including versions 0.3 and older of the HBase client library, please see the client library upgrade instructions.
Where to get help
If you have any questions or require assistance, please contact Google Cloud Support.
With any deprecation, there is a follow-up decommission when the API or service is formally removed. The Bigtable v1 API was shut down on January 31, 2021.