Flush all currently tracked spans.
Flush all currently tracked spans.
Future indicating completion.
Remove this span from the map.
Remove this span from the map. Synchronized.
Update the span in the map.
Update the span in the map. If none exists create a new span. Synchronized.
Takes care of storing the spans in a thread safe fashion. If a span is not removed from the map it will expire after the deadline is reached and sent off to scribe despite being incomplete.