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client: use batch-level runtime trace regions #11012

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client: use batch-level runtime trace regions #11012

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15 changes: 8 additions & 7 deletions client/tso_dispatcher.go
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Original file line number Diff line number Diff line change
Expand Up @@ -547,12 +547,15 @@ func (td *tsoDispatcher) processRequests(
) error {
// `done` must be guaranteed to be eventually called.
var (
requests = tbc.getCollectedRequests()
traceRegions = make([]*trace.Region, 0, len(requests))
spans = make([]opentracing.Span, 0, len(requests))
requests = tbc.getCollectedRequests()
spans = make([]opentracing.Span, 0, len(requests))
)
traceCtx := context.Background()
if len(requests) > 0 {
traceCtx = requests[0].requestCtx
}
traceRegion := trace.StartRegion(traceCtx, "pdclient.tsoReqSendBatch")
for _, req := range requests {
traceRegions = append(traceRegions, trace.StartRegion(req.requestCtx, "pdclient.tsoReqSend"))
if span := opentracing.SpanFromContext(req.requestCtx); span != nil && span.Tracer() != nil {
spans = append(spans, span.Tracer().StartSpan("pdclient.processRequests", opentracing.ChildOf(span.Context())))
}
Expand All @@ -561,9 +564,7 @@ func (td *tsoDispatcher) processRequests(
for i := range spans {
spans[i].Finish()
}
for i := range traceRegions {
traceRegions[i].End()
}
traceRegion.End()
}()

var (
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