Merge pull request #8811 from dolthub/aaron/nbs-ghost-store-refcheck

[no-release-notes] go: store/nbs: GhostBlockStore: Add refCheck which participates in updating hasRecords.

go/store/nbs/generational_chunk_store.go

@@ -250,7 +250,7 @@ func (gcs *GenerationalNBS) refCheck(recs []hasRecord) (hash.HashSet, error) {
 		return absent, nil
 	}
 
-	return gcs.ghostGen.hasMany(absent)
+	return gcs.ghostGen.refCheck(recs)
 }
 
 // Put caches c in the ChunkSource. Upon return, c must be visible to

go/store/nbs/ghost_store.go

@@ -149,6 +149,20 @@ func (g GhostBlockStore) hasMany(hashes hash.HashSet) (absent hash.HashSet, err
 	return absent, nil
 }
 
+func (g GhostBlockStore) refCheck(recs []hasRecord) (hash.HashSet, error) {
+	absent := hash.HashSet{}
+	for i := range recs {
+		if !recs[i].has {
+			if g.skippedRefs.Has(*recs[i].a) {
+				recs[i].has = true
+			} else {
+				absent.Insert(*recs[i].a)
+			}
+		}
+	}
+	return absent, nil
+}
+
 func (g GhostBlockStore) Put(ctx context.Context, c chunks.Chunk, getAddrs chunks.GetAddrsCurry) error {
 	panic("GhostBlockStore does not support Put")
 }