Make maps in maps before use.

projectbackfeedmanager.go

@@ -101,8 +101,14 @@ func (that *ProjectBackfeedManager) Do() {
 				sAddQueueItems[item.Queue] = append(sAddQueueItems[item.Queue], item.Item)
 			} else {
 				key := fmt.Sprintf("%s:%02x:%s", that.Name, item.PrimaryShard, item.SecondaryShard)
+				if _, exists := queueKeyMap[item.Queue]; !exists {
+					queueKeyMap[item.Queue] = make(map[string][][]byte)
+				}
 				queueKeyMap[item.Queue][key] = append(queueKeyMap[item.Queue][key], item.Item)
 				if item.SkipFeed {
+					if _, exists := skipFeedQueueItems[item.Queue]; !exists {
+						skipFeedQueueItems[item.Queue] = make(map[string]struct{})
+					}
 					skipFeedQueueItems[item.Queue][string(item.Item)] = Tag
 				}
 			}