SpanID

• SpanID
• Relation to ParentSpanID
• References

SpanID

SpanID is the span’s unique identifier. It consists of 8 randomly generated bytes and MUST be globally unique.

This field is REQUIRED for every span.

Relation to ParentSpanID

SpanID is the identifier passed along to ParentSpanID when creating a child span.

• If Span A with SpanIDA is the parent of Span B (whose spanID is SpanIDB), then the ParentSpanID for SpanB is SpanIDA.
• If Span Y’s ParentSpanID is NULL/empty, then Span Y is a root span

References