tsdb: re-use iterator when stepping through chunks

Saves memory allocations, hence reduces garbage-collection overheads. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2 years ago · 1848623c77
1 changed files with 1 additions and 1 deletions
--- a/tsdb/querier.go
+++ b/tsdb/querier.go
@ -682,7 +682,7 @@ func (p *populateWithDelSeriesIterator) Next() chunkenc.ValueType {
 		if p.currDelIter != nil {
 			p.curr = p.currDelIter
 		} else {
-			p.curr = p.currChkMeta.Chunk.Iterator(nil)
+			p.curr = p.currChkMeta.Chunk.Iterator(p.curr)
 		}
 		if valueType := p.curr.Next(); valueType != chunkenc.ValNone {
 			return valueType