End-to-end tracing is now generally available (GA). Spanner now supports end-to-end tracing, along with client-side tracing in the Node.js and Python client libraries, in addition to Java and Go

## Feature End-to-end tracing is now generally available ([GA](https://cloud.google.com/products#product-launch-stages)). Spanner now supports end-to-end tracing, along with client-side tracing in the Node.js and Python client libraries, in addition to Java and Go. For more information, see [Trace collection overview](https://cloud.google.com/spanner/docs/tracing-overview).