Fix tracing span collection #324
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collect all spans if export spans is called more than once
rvagg
approved these changes
Jan 4, 2022
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Goals
Caught this working with tracing over in go-data-transfer. I'm not sure what causes ExportSpans to get called multiple times -- over a fixed number? some kind of context cancellation? Not sure. Anyway, if it does, we were losing spans.
Implementation
Append span list rather than overwriting it on export.