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fix: add a retry on span routing #1525

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fix: add a retry on span routing #1525

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d9fff33
add a retry on span routing
mterhar Apr 10, 2025
cfc9673
add _sum to legacy metrics histograms
mterhar Apr 14, 2025
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20 changes: 17 additions & 3 deletions route/route.go
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Original file line number Diff line number Diff line change
Expand Up @@ -661,9 +661,23 @@ func (r *Router) processEvent(ev *types.Event, reqID interface{}) error {
err = r.Collector.AddSpanFromPeer(span)
}
if err != nil {
r.Metrics.Increment(r.incomingOrPeer + "_router_dropped")
debugLog.Logf("Dropping span from batch, channel full")
return err
// process immediately or offload to the proper peer
targetShard := r.Sharder.WhichShard(traceID)
if targetShard.Equals(r.Sharder.MyShard()) {
ok, _ := r.Collector.ProcessSpanImmediately(span)
// ProcessSpanImmediately function handles the metrics
if !ok {
r.Metrics.Increment(r.incomingOrPeer + "_router_dropped")
debugLog.Logf("Dropping span from batch, channel full")
return err
}
} else {
ev.APIHost = targetShard.GetAddress()
r.PeerTransmission.EnqueueEvent(ev)
r.Metrics.Increment(r.incomingOrPeer + "_router_peer")
debugLog.Logf("redirected span due to AddSpan channel being full")
return err
}
}

r.Metrics.Increment(r.incomingOrPeer + "_router_span")
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