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perf(schema): tighten PredicatesToDelete allocation #9723

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perf(schema): tighten PredicatesToDelete allocation #9723

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21 changes: 11 additions & 10 deletions schema/schema.go
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Original file line number Diff line number Diff line change
Expand Up @@ -467,17 +467,18 @@ func (s *state) HasCount(ctx context.Context, pred string) bool {
func (s *state) PredicatesToDelete(pred string) []string {
s.RLock()
defer s.RUnlock()
preds := make([]string, 0)
if schema, ok := s.predicate[pred]; ok {
preds = append(preds, pred)

if schema.ValueType == pb.Posting_VFLOAT && len(schema.IndexSpecs) != 0 {
preds = append(preds, pred+hnsw.VecEntry)
preds = append(preds, pred+hnsw.VecKeyword)
preds = append(preds, pred+hnsw.VecDead)
}
schema, ok := s.predicate[pred]
if !ok {
return nil
}
if schema.ValueType == pb.Posting_VFLOAT && len(schema.IndexSpecs) != 0 {
// Vector predicate: pre-size to 4 (base + 3 vector sidecar preds).
preds := make([]string, 1, 4)
preds[0] = pred
return append(preds, pred+hnsw.VecEntry, pred+hnsw.VecKeyword, pred+hnsw.VecDead)
}
return preds
// Common case: exactly one predicate.
return []string{pred}
}

// IsList returns whether the predicate is of list type.
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