td><code>STACKDRIVER_TRACING_ENABLED</code></td><td>Boolean</td><td><code>false</code></td><td>If enabled, stackdriver will get configured as the tracer.</td></tr><tr><td><code>STACKDRIVER_TRACING_MAX_NUMBER_OF_ANNOTATIONS</code></td><td>Integer</td><td><code>200</code></td><td>Sets the max number of annotations for stackdriver</td></tr><tr><td><code>STACKDRIVER_TRACING_MAX_NUMBER_OF_ATTRIBUTES</code></td><td>Integer</td><td><code>200</code></td><td>Sets the max number of attributes for stackdriver</td></tr