Adds comment.

Signed-off-by: Cyril Tovena <cyril.tovena@gmail.com>
grafana · Dec 7, 2020 · f3c0cf7 · f3c0cf7
1 parent e7e4015
commit f3c0cf7
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/pkg/logql/evaluator.go b/pkg/logql/evaluator.go
@@ -950,6 +950,8 @@ func literalStepEvaluator(
 	)
 }
 
+// absentLabels guesses labels based on labels matchers of a SampleExpr
+// This is to replace missing timeseries during absent_over_time aggregation.
 func absentLabels(expr SampleExpr) labels.Labels {
 	m := labels.Labels{}