From f9b38f7f2d430a2e73291c0533b750575a08f6e2 Mon Sep 17 00:00:00 2001
From: Aliaksandr Valialkin <valyala@gmail.com>
Date: Fri, 17 Jul 2020 00:05:08 +0300
Subject: [PATCH] app/vminsert/influx: properly handle the case when certain
 labels with empty values are removed by ApplyRelabeling() call

Previously this could lead to `out of range` panic
---
 app/vminsert/influx/request_handler.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/vminsert/influx/request_handler.go b/app/vminsert/influx/request_handler.go
index e96492394d..d425b7db1f 100644
--- a/app/vminsert/influx/request_handler.go
+++ b/app/vminsert/influx/request_handler.go
@@ -120,7 +120,7 @@ func insertRows(at *auth.Token, db string, rows []parser.Row, mayOverrideAccount
 			}
 			labels = ic.Labels
 			if !hasRelabeling {
-				labels = labels[labelsLen : labelsLen+1]
+				labels = labels[len(labels)-1:]
 			}
 			ic.MetricNameBuf = ic.MetricNameBuf[:metricNameBufLen]
 			for i := range labels {