Don't allocate a mergeSeries if there is only one series to merge.

2018-01-25 11:11:55 +00:00
parent 8a01a0fbed
commit 48e39068bd
1 changed files with 3 additions and 0 deletions
--- a/storage/fanout.go
+++ b/storage/fanout.go
@ -340,6 +340,9 @@ func (c *mergeSeriesSet) Next() bool {
 }

 func (c *mergeSeriesSet) At() Series {
+	if len(c.currentSets) == 1 {
+		return c.currentSets[0].At()
+	}
 	series := []Series{}
 	for _, seriesSet := range c.currentSets {
 		series = append(series, seriesSet.At())