return error if errClose

weed/filer/cassandra/cassandra_store.go

@@ -220,6 +220,7 @@ func (store *CassandraStore) ListDirectoryEntries(ctx context.Context, dirPath u
 	}
 	if errClose := iter.Close(); errClose != nil {
 		glog.V(0).Infof("list iterator close: %v", errClose)
+		return lastFileName, errClose
 	}
 
 	return lastFileName, err

weed/filer/cassandra2/cassandra_store.go

@@ -221,6 +221,7 @@ func (store *Cassandra2Store) ListDirectoryEntries(ctx context.Context, dirPath
 
 	if errClose := iter.Close(); errClose != nil {
 		glog.V(0).Infof("list iterator close: %v", errClose)
+		return lastFileName, errClose
 	}
 
 	return lastFileName, err

weed/filer/mongodb/mongodb_store.go

@@ -330,8 +330,9 @@ func (store *MongodbStore) ListDirectoryPrefixedEntries(ctx context.Context, dir
 		}
 	}
 
-	if err := cur.Close(ctx); err != nil {
+	if errClose := cur.Close(ctx); errClose != nil {
 		glog.V(0).InfofCtx(ctx, "list iterator close: %v", err)
+		return lastFileName, errClose
 	}
 
 	return lastFileName, err