initialize checkpoint when creating ddsketch aggregator to prevent pa…

…nic when merging into a empty one (#402) (#403)
ljmsc · Dec 26, 2019 · 4f88422 · 4f88422
1 parent 1414d36
commit 4f88422
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/sdk/metric/aggregator/ddsketch/ddsketch.go b/sdk/metric/aggregator/ddsketch/ddsketch.go
@@ -45,9 +45,10 @@ var _ aggregator.Distribution = &Aggregator{}
 // New returns a new DDSketch aggregator.
 func New(cfg *Config, desc *export.Descriptor) *Aggregator {
 	return &Aggregator{
-		cfg:     cfg,
-		kind:    desc.NumberKind(),
-		current: sdk.NewDDSketch(cfg),
+		cfg:        cfg,
+		kind:       desc.NumberKind(),
+		current:    sdk.NewDDSketch(cfg),
+		checkpoint: sdk.NewDDSketch(cfg),
 	}
 }