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Optimize query: UID expansion #2772

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merged 3 commits into from
Nov 22, 2018
Merged

Optimize query: UID expansion #2772

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3d46ee3
Add a lot of OC tracing in query path execution. Run handleUidPosting…
manishrjain Nov 22, 2018
68a6daa
Fix bug, this works.
manishrjain Nov 22, 2018
125b90b
Self review
manishrjain Nov 22, 2018
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9 changes: 8 additions & 1 deletion query/query.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1835,7 +1835,14 @@ func getReversePredicates(ctx context.Context) ([]string, error) {
// ProcessGraph processes the SubGraph instance accumulating result for the query
// from different instances. Note: taskQuery is nil for root node.
func ProcessGraph(ctx context.Context, sg, parent *SubGraph, rch chan error) {
ctx, span := otrace.StartSpan(ctx, "query.ProcessGraph")
var suffix string
if len(sg.Params.Alias) > 0 {
suffix += "." + sg.Params.Alias
}
if len(sg.Attr) > 0 {
suffix += "." + sg.Attr
}
ctx, span := otrace.StartSpan(ctx, "query.ProcessGraph"+suffix)
defer span.End()

if sg.Attr == "uid" {
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