Fix race in symbol table re-creation
@@ -665,7 +665,7 @@ func (h *Head) gc() {
// Rebuild symbols and label value indices from what is left in the postings terms.
h.postings.mtx.RLock()
- symbols := make(map[string]struct{}, len(h.symbols))
+ symbols := make(map[string]struct{})
values := make(map[string]stringset, len(h.values))
for t := range h.postings.m {
