From 3cfb3a3683abc83ff315d918b2d406e9d4fd2d39 Mon Sep 17 00:00:00 2001
From: Aliaksandr Valialkin <valyala@gmail.com>
Date: Mon, 22 Mar 2021 23:02:37 +0200
Subject: [PATCH] lib/storage: respect the deadline passed to
 Storage.SearchMetricNames

---
 lib/storage/storage.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/storage/storage.go b/lib/storage/storage.go
index 63733fd1a8..a2884dd4df 100644
--- a/lib/storage/storage.go
+++ b/lib/storage/storage.go
@@ -870,6 +870,11 @@ func (s *Storage) SearchMetricNames(tfss []*TagFilters, tr TimeRange, maxMetrics
 	mns := make([]MetricName, 0, len(tsids))
 	var metricName []byte
 	for i := range tsids {
+		if i&paceLimiterSlowIterationsMask == 0 {
+			if err := checkSearchDeadlineAndPace(deadline); err != nil {
+				return nil, err
+			}
+		}
 		metricID := tsids[i].MetricID
 		var err error
 		metricName, err = idb.searchMetricNameWithCache(metricName[:0], metricID)