From dba4942edf2d69aee4687b4f969c6a637b6d315d Mon Sep 17 00:00:00 2001
From: Leon Sorokin <leeoniya@gmail.com>
Date: Thu, 7 Jan 2021 11:54:22 -0600
Subject: [PATCH] GraphNG: fix spanGaps optimization in alignDataFrames(). see
 #30101. (#30118)

---
 packages/grafana-ui/src/components/GraphNG/utils.ts | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/packages/grafana-ui/src/components/GraphNG/utils.ts b/packages/grafana-ui/src/components/GraphNG/utils.ts
index b10b6eec0ff..3fb355a8dbd 100755
--- a/packages/grafana-ui/src/components/GraphNG/utils.ts
+++ b/packages/grafana-ui/src/components/GraphNG/utils.ts
@@ -69,12 +69,11 @@ export function alignDataFrames(frames: DataFrame[], fields?: XYFieldMatchers):
       throw new Error('Only a single x field is supported');
     }
 
-    let nullModesFrame: JoinNullMode[] = [];
+    let nullModesFrame: JoinNullMode[] = [0];
 
     // Add the first X axis
     if (!sourceFields.length) {
       sourceFields.push(dims.x[0]);
-      nullModesFrame.push(0);
     }
 
     const alignedData: AlignedData = [