Trace events in a database system

A method comprising:

• instantiating, by at least one hardware processor, a user code runtime to execute user-defined function (UDF) code, the user code runtime instantiated within a sandbox process of an execution node;
• detecting, by the at least one hardware processor, an application programming interface (API) call during execution of the UDF code, the API call including one or more configurations of a trace event, and the API call being pre-mapped to a telemetry API configured to collect telemetry information associated with the trace event;
• collecting, by the at least one hardware processor, based on the one or more configurations, the telemetry information associated with the trace event using the telemetry API, the telemetry API configured in a processing stack with the UDF code;
• formatting, by the at least one hardware processor, the telemetry information using the telemetry API, to generate structured telemetry information compatible with a pre-defined schema of an event table;
• and
• causing, by the at least one hardware processor, ingestion of the structured telemetry information into the event table according to the pre-defined schema.

A computer-storage medium comprising instructions that, when executed by one or more processors of a machine, configure the machine to perform operations comprising:

• instantiating a user code runtime to execute user-defined function (UDF) code, the user code runtime instantiated within a sandbox process of an execution node;
• detecting an application programming interface (API) call during execution of the UDF code, the API call including one or more configurations of a trace event, and the API call being pre-mapped to a telemetry API configured to collect telemetry information associated with the trace event;
• collecting based on the one or more configurations, the telemetry information associated with the trace event using the telemetry API, the telemetry API configured in a processing stack with the UDF code;
• formatting the telemetry information using the telemetry API, to generate structured telemetry information compatible with a pre-defined schema of an event table;
• and
• causing ingestion of the structured telemetry information into the event table according to the pre-defined schema.