Fix ending server span with servlet async request #13830
Merged
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Resolves #13788
Currently server span is not ended correctly when
HttpServletRequest.startAsync()
is called while the current span is not the server span. We use the context captured whenstartAsync()
is called to end the server span which does not work when the current span in that context is not the server span. In this PR we remember the context used when request started and use that for ending the server span.