comments and fixing case of untagged series

Author: replay

idx/memory/memory.go

@@ -303,15 +303,15 @@ func (m *MemoryIdx) add(def *schema.MetricDefinition) idx.Archive {
 	}
 
 	pos := strings.Index(path, ";")
-
-	// now walk backwards through the node path to find the first branch which exists that
-	// this path extends.
 	if pos == -1 {
 		pos = strings.LastIndex(path, ".")
 	} else {
+		// find the last '.' that is not part of a tag
 		pos = strings.LastIndex(path[:pos], ".")
 	}
 
+	// now walk backwards through the node path to find the first branch which exists that
+	// this path extends.
 	prevPos := len(path)
 	for pos != -1 {
 		branch := path[:pos]
@@ -636,6 +636,8 @@ func (m *MemoryIdx) find(orgId int, pattern string) ([]*Node, error) {
 		tags := nodes[1]
 		nodes = strings.Split(nodes[0], ".")
 		nodes[len(nodes)-1] += ";" + tags
+	} else {
+		nodes = strings.Split(nodes[0], ".")
 	}
 
 	// pos is the index of the first node with special chars, or one past the last node if exact