Return early if there's no block for data column sidecar (#15802)

beacon-chain/sync/rpc_beacon_blocks_by_root.go

@@ -93,6 +93,10 @@ func (s *Service) sendBeaconBlocksRequest(ctx context.Context, requests *types.B
 // requestAndSaveMissingDataColumns checks if the data columns are missing for the given block.
 // If so, requests them and saves them to the storage.
 func (s *Service) requestAndSaveMissingDataColumnSidecars(blks []blocks.ROBlock) error {
+	if len(blks) == 0 {
+		return nil
+	}
+
 	samplesPerSlot := params.BeaconConfig().SamplesPerSlot
 
 	custodyGroupCount, err := s.cfg.p2p.CustodyGroupCount()

changelog/ttsao_return-early-req-column.md

@@ -0,0 +1,3 @@
+### Ignored
+
+- Return early if there's no block for `requestAndSaveMissingDataColumnSidecars`