[Tokyo Region] Backend Database Maintenance
Scheduled Maintenance Report for Treasure Data
The scheduled database maintenance is now complete.
Posted Sep 12, 2023 - 19:20 PDT
Verification is currently underway for the maintenance items.
Posted Sep 12, 2023 - 19:11 PDT
In progress
Scheduled maintenance is currently in progress. We will provide updates as necessary.
Posted Sep 12, 2023 - 19:00 PDT
On September 13, 2023 11:00 to 12:00 JST (September 13, 2023 02:00 - 03:00 UTC), the backend databases supporting the Treasure Data system will undergo a short maintenance.

# Impact
During the maintenance window, the RDS backend databases supporting the Treasure Data Platform will undergo a MySQL version upgrade. During this time frame, despite the one-hour window, the databases will only become unreachable for no longer than 3 minutes in total. Customers will experience momentary failures, instabilities, or service unreachable for all services. As we approach the end of the maintenance, services will gradually return to their full throughput and operations.

During the database failover period, customers may observe the following symptoms:
- The Web Console will not be functional.
- Streaming import requests will fail: Where fluentd / td-agent is being used (as recommended), event collection will continue locally on each device/server and will recover automatically once the maintenance is complete due to the built-in buffering and retry mechanisms.
- JavaScript SDK and Mobile SDK event collection will continue undisturbed but events will not be available for querying until the maintenance is completed.
- Real-time Segment event ingestion will continue undisturbed but events will not be available for querying until the maintenance is completed.
- Requests to REST, CDP, Workflow, and Treasure Insights APIs will receive HTTP 5XX errors.
- Presto JDBC / ODBC Gateway return errors during downtime.
- The Premium Audit log will be delayed.
- td command­-line (CLI) commands will encounter failures and execution will be delayed until the maintenance is complete. In some cases, the commands will be returning errors. Presto, Hive, Bulk Import, and Data Connector jobs will be delayed. Already running jobs will be completed successfully or retried internally until they are.
- Workflows using Treasure Data operators (e.g. td>) will retry and regain full functionality again after the failover. In case of workflow session failures, the customer could elect to resume them manually.
- CDP services in the audience studio would be unavailable.
- Requests to ADL REST services will experience errors and data that are ingested may experience longer than normal delay before they are queryable.

# Communication
Beyond this notice, we will provide updates approximately one hour before the beginning of the maintenance window, at the start and completion of the operation, and once the verification is completed. At that time, all systems will have returned to full functionality and the Scheduled Maintenance will be closed.
If you have any questions or concerns about this maintenance, please feel free to reach out to our Support team at support@treasuredata.com.
Posted Aug 09, 2023 - 19:44 PDT
This scheduled maintenance affected: Tokyo (Web Interface, REST API, Streaming Import REST API, Mobile/Javascript REST API, Data Connector Integrations, Hadoop / Hive Query Engine, Presto Query Engine, Presto JDBC/ODBC Gateway, Workflow, CDP API, CDP Personalization - Lookup API, CDP Personalization - Ingest API, Data Access API (beta), Insights (beta), ADL, Data Tank, Consent Configuration API).